{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"Shape_Leng","type":"float","width":19,"decimals":11},{"name":"Shape_Area","type":"float","width":19,"decimals":11},{"name":"MapUnit","type":"character","width":10},{"name":"IdentityCo","type":"character","width":50},{"name":"Label","type":"character","width":50},{"name":"Symbol","type":"character","width":254},{"name":"DataSource","type":"character","width":50},{"name":"Notes","type":"character","width":254},{"name":"MapUnitPol","type":"character","width":50},{"name":"PTYPE","type":"character","width":50}],"n_rows":1681,"rows_kept":1681,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_absent","reader":"statdb_count/9"}
[2.78299504015e+03,3.19310690267e+05,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_1","Stonehenge Formation, Dam Five Member"]
[1.05778519189e+04,6.16348010272e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_2","Stonehenge Formation, Funkstown Member"]
[9.92014683869e+03,4.03449997701e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_3","Stonehenge Formation, Stoufferstown Member"]
[7.12099407824e+03,7.45788681243e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_4","Conococheague Formation, Shady Grove Member"]
[1.94065375094e+03,1.44674746858e+05,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_5","Rockdale Run Formation"]
[2.07904318759e+03,1.34112714773e+05,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_6","Stonehenge Formation, Dam Five Member"]
[2.62930353414e+03,9.48957403853e+04,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_7","Stonehenge Formation, Funkstown Member"]
[1.89438021016e+03,5.13751397948e+04,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_8","Stonehenge Formation, Stoufferstown Member"]
[8.02819287500e+03,7.03669093179e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_9","Pinesburg Station Dolomite"]
[8.20480251830e+03,4.91059978142e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_10","St. Paul Group (undivided)"]
[8.20500281854e+03,2.86096898238e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_11","Chambersberg Formation"]
[3.53474648975e+04,1.43803457224e+07,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_12","Rockdale Run Formation"]
[8.68235838296e+03,2.40260576818e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_13","Rockdale Run Formation"]
[7.43097820172e+03,4.72198277579e+05,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_14","Stonehenge Formation, Dam Five Member"]
[8.92749843701e+03,6.51453286246e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_15","Stonehenge Formation, Funkstown Member"]
[9.97074725909e+03,2.45677584375e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_16","Stonehenge Formation, Stoufferstown Member"]
[1.10864810545e+04,1.07168714417e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_17","Conococheague Formation, Shady Grove Member"]
[1.04551249892e+04,5.63542914093e+05,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_18","Martinsburg Formation, lower member"]
[4.85749124197e+03,2.76758097147e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_19","Chambersberg Formation"]
[4.87446843523e+03,2.84020656288e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_20","St. Paul Group (undivided)"]
[4.87577709281e+03,3.00250394256e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_21","Pinesburg Station Dolomite"]
[3.37486575496e+04,2.48653226368e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_22","Stonehenge Formation, Dam Five Member"]
[3.28245063045e+04,2.25733509467e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_23","Stonehenge Formation, Funkstown Member"]
[2.24905675428e+04,9.72124375335e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_24","Stonehenge Formation, Stoufferstown Member"]
[1.54207213450e+03,6.44696292642e+04,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_25","Chambersberg Formation"]
[4.25140450293e+03,1.59112044371e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_26","St. Paul Group (undivided)"]
[6.28923410421e+03,4.09903259581e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_27","Pinesburg Station Dolomite"]
[2.04349659445e+04,1.78931330042e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_28","Conococheague Formation, Shady Grove Member"]
[1.71213332612e+03,1.07898192595e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_29","Pinesburg Station Dolomite"]
[2.66574086699e+03,3.02880892351e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_30","Conococheague Formation, Zullinger Member"]
[6.27144180086e+03,5.78327662270e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_31","Conococheague Formation, Shady Grove Member"]
[8.33598284635e+03,2.93833548721e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_32","Stonehenge Formation, Stoufferstown Member"]
[1.46716388142e+04,4.36839831266e+06,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_33","Conococheague Formation, Zullinger Member"]
[1.65951643835e+04,4.00281238806e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m). Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_34","Rockdale Run Formation"]
[1.54231629937e+04,1.24295346518e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_35","Stonehenge Formation, Dam Five Member"]
[1.50198677935e+04,1.02987874127e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_36","Stonehenge Formation, Funkstown Member"]
[1.45072496150e+04,3.98007541615e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_37","Stonehenge Formation, Stoufferstown Member"]
[1.44627472714e+04,1.07739536092e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_38","Conococheague Formation, Shady Grove Member"]
[3.88673616594e+04,2.02635594110e+07,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_39","Conococheague Formation, Zullinger Member"]
[6.25913374259e+03,2.74866775425e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_40","Conococheague Formation, Big Spring Station Member"]
[2.46639956540e+03,8.53271652797e+04,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_41","Conococheague Formation, Big Spring Station Member"]
[4.30519929902e+03,5.56982123641e+05,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_42","Elbrook Formation"]
[3.87493724662e+03,1.38676250035e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_43","Conococheague Formation, Big Spring Station Member"]
[6.01462017955e+03,1.22793202931e+06,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_44","Elbrook Formation"]
[4.72014261903e+03,1.96789837946e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_45","Conococheague Formation, Big Spring Station Member"]
[4.44345171177e+03,5.13276127374e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_46","Conococheague Formation, Zullinger Member"]
[1.54216002682e+04,8.59940513117e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_47","Conococheague Formation, Big Spring Station Member"]
[1.28898277217e+04,6.64260002336e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_48","Conococheague Formation, Big Spring Station Member"]
[1.15273963892e+04,5.68395818039e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_49","St. Paul Group (undivided)"]
[1.21725783673e+04,5.25464494752e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_50","Chambersberg Formation"]
[9.07735594893e+02,2.13130167018e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_51","Sams Creek Muscovite Phyllite"]
[4.23234280793e+03,2.20496651996e+05,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_52","New Oxford Formation, Irishtown Member"]
[2.27699953495e+03,7.41927054423e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_53","Sams Creek Formation, tuffaceous phyllite"]
[9.16992878069e+02,3.50101980785e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_54","Sams Creek Formation, marble"]
[1.48883771970e+02,1.32025327067e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_55","Sams Creek Formation, tuffaceous phyllite"]
[1.56174403866e+03,9.91009574306e+04,"CZscsr","certain","_Zscsr",null,"DS1","Medium to dark bluish-gray, fine-grained, thin-bedded to laminated, siliceous to argillaceous or micaceous limestone, interbedded with minor amounts of black to silvery gray phyllite.","MUP_56","Sams Creek Group, Silver Run Limestone Member"]
[1.44388802068e+02,1.15749022988e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_57","Sams Creek Formation, marble"]
[9.18261247680e+03,3.74972161326e+05,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_58","Sams Creek Formation, tuffaceous phyllite"]
[3.83307129417e+03,2.43865406828e+05,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_59","New Oxford Formation, Irishtown Member"]
[9.83072720574e+03,1.21883526953e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_60","Sams Creek Formation, metabasalt"]
[9.05430660081e+02,2.90110533917e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_61","Sams Creek Formation, marble"]
[6.09866592855e+03,4.13192070168e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_62","Sams Creek Formation, metabasalt"]
[1.35705495596e+04,8.57586934998e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_63","Sams Creek Formation, quartzite"]
[1.25740850176e+04,1.01813143985e+06,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_64","Sams Creek Formation, tuffaceous phyllite"]
[4.32831091114e+03,1.87420191855e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_65","Sams Creek Formation, marble"]
[3.79183530321e+02,6.62361887161e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_66","Sams Creek Formation, quartzite"]
[4.67394087692e+02,1.28386933671e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_67","Sams Creek Formation, quartzite"]
[8.43946506834e+02,1.76537346079e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_68","Sams Creek Formation, marble"]
[3.98107102853e+02,3.66208513637e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_69","Sams Creek Formation, marble"]
[4.73824328055e+03,1.78446876466e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_70","Sams Creek Formation, marble"]
[5.63200730949e+03,3.67700298866e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_71","Sams Creek Formation, marble"]
[3.96477751644e+02,3.97866243801e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_72","Sams Creek Formation, marble"]
[2.80279901643e+02,4.29135954681e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_73","Sams Creek Formation, quartzite"]
[1.09596962634e+04,4.75118362673e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_74","Sams Creek Formation, marble"]
[1.01098995125e+03,2.03937621138e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_75","Sams Creek Formation, marble"]
[3.54369723632e+03,1.03517514981e+05,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_76","Sams Creek Formation, tuffaceous phyllite"]
[1.13742087483e+03,1.16181550785e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_77","Sams Creek Formation, quartzite"]
[3.17331322013e+02,5.13720429040e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_78","Sams Creek Formation, quartzite"]
[6.18411083051e+01,1.70914258918e+02,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_79","Sams Creek Formation, marble"]
[2.32735257824e+04,1.02480885007e+06,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_80","Sams Creek Formation, marble"]
[1.67350459554e+04,2.06508822423e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_81","Sams Creek Formation, metabasalt"]
[7.06508489167e+02,9.49239881714e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_82","Sams Creek Formation, quartzite"]
[6.61267039786e+02,6.23512579410e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_83","Sams Creek Formation, marble"]
[9.94240907002e+02,1.71947733514e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_84","Sams Creek Formation, marble"]
[1.12260527944e+04,4.90893588852e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_85","Sams Creek Formation, marble"]
[1.04513075232e+04,3.57914972354e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_86","Sams Creek Formation, marble"]
[5.70415281409e+02,1.09278492230e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_87","Sams Creek Formation, marble"]
[1.01697105777e+03,2.29596976232e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_88","Sams Creek Formation, marble"]
[1.02878180914e+03,1.62258582981e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_89","Sams Creek Formation, marble"]
[1.15624176545e+03,3.48965173010e+04,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_90","New Oxford Formation, Irishtown Member"]
[4.14033477467e+02,5.78552221506e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_91","Sams Creek Formation, quartzite"]
[3.78562244683e+02,4.43610099129e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_92","Sams Creek Formation, marble"]
[1.38247046559e+03,1.84407921467e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_93","Sams Creek Formation, quartzite"]
[4.50544972108e+02,6.08539861562e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_94","Sams Creek Formation, marble"]
[3.10220832038e+02,4.60981763782e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_95","Sams Creek Formation, marble"]
[2.24931140610e+02,3.19991383703e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_96","Sams Creek Formation, quartzite"]
[1.41377526533e+03,1.41893334844e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_97","Sams Creek Formation, marble"]
[6.99505015980e+03,8.15922986504e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_98","Sams Creek Formation, metabasalt"]
[1.50921654879e+03,3.30849328881e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_99","Sams Creek Formation, marble"]
[9.94231640243e+02,1.50621279345e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_100","Sams Creek Formation, marble"]
[4.46943559475e+02,6.09284366342e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_101","Sams Creek Formation, quartzite"]
[7.79681957114e+02,8.65024559407e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_102","Sams Creek Formation, marble"]
[3.34902415526e+02,5.37852505268e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_103","Sams Creek Formation, quartzite"]
[3.77688105781e+02,5.54116071966e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_104","Sams Creek Formation, quartzite"]
[1.61909714668e+03,3.29420107099e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_105","Sams Creek Formation, quartzite"]
[1.15772015411e+03,2.01747984814e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_106","Sams Creek Formation, marble"]
[3.56871941978e+02,4.08670918652e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_107","Sams Creek Formation, quartzite"]
[2.21617786507e+03,1.88511556779e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_108","Sams Creek Formation, quartzite"]
[9.82677807947e+02,8.55356807103e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_109","Sams Creek Formation, quartzite"]
[8.08237855659e+02,5.61125107919e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_110","Sams Creek Formation, quartzite"]
[4.76411935056e+02,6.82380548263e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_111","Sams Creek Formation, quartzite"]
[2.30430272533e+03,5.09813800289e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_112","Sams Creek Formation, metabasalt"]
[3.41012515183e+03,1.24195126348e+05,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_113","Wakefield Marble"]
[6.92936055903e+02,1.53039190557e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_114","Sams Creek Formation, quartzite"]
[5.99113416076e+02,8.30531466508e+03,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_115","Wakefield Marble"]
[2.75851169401e+02,2.58786000939e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_116","Sams Creek Formation, quartzite"]
[2.30277856213e+03,1.15312059117e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_117","Sams Creek Formation, metabasalt"]
[7.37280286075e+02,1.07397106845e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_118","Sams Creek Formation, quartzite"]
[4.48183436079e+03,6.06223562915e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_119","Sams Creek Formation, quartzite"]
[4.37258034510e+02,5.55082152709e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_120","Sams Creek Formation, marble"]
[9.79493399069e+02,1.62569825294e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_121","Sams Creek Formation, marble"]
[3.79428655918e+02,3.68337687749e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_122","Sams Creek Formation, quartzite"]
[6.69344721479e+02,9.95037959580e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_123","Sams Creek Formation, marble"]
[6.82610742686e+02,6.98272136947e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_124","Sams Creek Formation, marble"]
[4.80001827061e+03,4.89468638151e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_125","Sams Creek Formation, quartzite"]
[7.29087641600e+03,2.36659771940e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_126","Sams Creek Formation, marble"]
[6.88270267892e+03,9.09393121941e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_127","Sams Creek Formation, quartzite"]
[1.52616087831e+03,1.67761600404e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_128","Sams Creek Formation, quartzite"]
[9.37937050337e+02,1.08013020934e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_129","Sams Creek Formation, marble"]
[2.29305911876e+03,2.93146046536e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_130","Sams Creek Formation, marble"]
[8.29726501878e+02,1.24196440536e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_131","Sams Creek Formation, quartzite"]
[5.95716579297e+02,5.41838929498e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_132","Sams Creek Formation, quartzite"]
[1.54355636839e+02,1.23598788074e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_133","Sams Creek Formation, marble"]
[4.91348847554e+02,9.82762391660e+03,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_134","Wakefield Marble"]
[4.65692940717e+02,5.87147633307e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_135","Sams Creek Formation, quartzite"]
[5.11934444459e+03,1.58960401219e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_136","Sams Creek Formation, marble"]
[3.88484277784e+02,2.93988190166e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_137","Sams Creek Formation, quartzite"]
[2.37805339434e+03,3.60570670945e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_138","Sams Creek Formation, marble"]
[1.07631130003e+03,1.03777263287e+04,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_139","Sams Creek Formation, quartzite within phyllite"]
[6.62951654976e+02,7.06565773210e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_140","Sams Creek Formation, marble"]
[8.59676168321e+02,2.92479845108e+04,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_141","Wakefield Marble"]
[5.31667108123e+02,4.09914692529e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_142","Sams Creek Formation, quartzite"]
[4.62551760617e+02,4.39564329476e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_143","Sams Creek Formation, marble"]
[1.28241039968e+03,4.22775592420e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_144","Sams Creek Formation, metabasalt"]
[6.20702243940e+02,7.10589035785e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_145","Sams Creek Formation, marble"]
[5.95297872138e+02,5.69256365885e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_146","Sams Creek Formation, quartzite"]
[4.82564655065e+02,6.14945650985e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_147","Sams Creek Formation, marble"]
[3.02892000354e+03,6.61901524989e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_148","Sams Creek Formation, marble"]
[3.21236490492e+02,2.90458851278e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_149","Sams Creek Formation, quartzite"]
[7.84901360151e+02,8.87731062731e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_150","Sams Creek Formation, quartzite"]
[3.65604436879e+02,2.47455689817e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_151","Sams Creek Formation, quartzite"]
[6.97451230166e+03,7.85265640304e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_152","Sams Creek Formation, quartzite"]
[3.32173907344e+03,1.10765720826e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_153","Sams Creek Formation, marble"]
[7.96329585569e+02,8.31748373800e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_154","Sams Creek Formation, quartzite"]
[8.88259802473e+02,1.46661590757e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_155","Sams Creek Formation, marble"]
[1.75395471720e+03,1.90578468378e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_156","Sams Creek Formation, quartzite"]
[3.63437082760e+03,3.92368890045e+04,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_157","Sams Creek Formation, quartzite within phyllite"]
[5.85579970227e+02,5.24423219492e+03,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_158","Sams Creek Formation, quartzite within phyllite"]
[1.26498941441e+03,1.69841978953e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_159","Sams Creek Formation, marble"]
[1.31549538482e+03,1.66687761896e+04,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_160","Sams Creek Formation, quartzite within phyllite"]
[4.89665314652e+02,4.02355630776e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_161","Sams Creek Formation, quartzite"]
[4.20942405177e+02,3.53869399666e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_162","Sams Creek Formation, quartzite"]
[3.02846752464e+03,2.01529910327e+05,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_163","Sams Creek Formation, tuffaceous phyllite"]
[9.91977260308e+02,9.74437551167e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_164","Sams Creek Formation, marble"]
[7.70051250886e+02,2.94452085032e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_165","Sams Creek Formation, metabasalt"]
[7.15482092606e+02,2.11590357973e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_166","Sams Creek Formation, metabasalt"]
[5.49314548697e+02,8.22976939962e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_167","Sams Creek Formation, marble"]
[3.34285989888e+02,3.50648899061e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_168","Sams Creek Formation, quartzite"]
[1.24694718111e+03,1.58327399202e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_169","Sams Creek Formation, marble"]
[4.09106912336e+02,6.65781403491e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_170","Sams Creek Formation, marble"]
[1.37945237582e+03,1.85800914680e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_171","Sams Creek Formation, quartzite"]
[1.55289821334e+03,1.84079736677e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_172","Sams Creek Formation, quartzite"]
[6.11246141751e+02,5.98674014668e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_173","Sams Creek Formation, quartzite"]
[4.40248138341e+02,8.10702899832e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_174","Sams Creek Formation, metabasalt"]
[3.70327399821e+02,3.85800952653e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_175","Sams Creek Formation, marble"]
[4.83656167985e+02,6.52816933129e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_176","Sams Creek Formation, marble"]
[1.15012337717e+03,1.21319625929e+04,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_177","Sams Creek Formation, quartzite within phyllite"]
[6.01920360595e+02,1.51317663931e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_178","Sams Creek Formation, metabasalt"]
[6.94386334441e+02,8.48308250205e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_179","Sams Creek Formation, marble"]
[3.98235700424e+02,3.86940754497e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_180","Sams Creek Formation, quartzite"]
[5.85679157290e+02,5.92187549563e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_181","Sams Creek Formation, quartzite"]
[4.92660383066e+02,9.11369284583e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_182","Sams Creek Formation, marble"]
[6.25530064893e+02,1.92990823560e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_183","Sams Creek Formation, metabasalt"]
[1.09221475777e+05,2.93432239147e+07,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_184","Weverton Formation, Buzzard Knob Member"]
[1.49862066706e+04,3.48465862562e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_185","Weverton Formation, Owens Creek Member"]
[1.78441442993e+04,5.53996620857e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_186","Harpers Formation"]
[1.42978357339e+04,2.33584531947e+06,"Cfu","certain","_fu",null,"DS1","Medium- to dark-gray, thin- to medium-bedded, pyritic, argillaceous limestone and shaly limestone. Contains intervals of tan-weathering dolomitic shale and sandy brecciated limestone.","MUP_187","Frederick Formation, undivided"]
[1.60673647909e+04,3.40909074714e+06,"Trgc","certain","^gc",null,"DS1","Limestone conglomerate marks the western edge of the Gettysburg Basin in Maryland and is similar in appearance and position to the Leesburg Formation in the Culpeper Basin.","MUP_188","Gettysburg Formation, conglomerate"]
[3.59479270300e+04,6.33158006101e+07,"Trg","certain","^g",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained siltstone, claystone, mudstone, and fine-grained sandstone.","MUP_189","Gettysburg Formation"]
[1.09807735710e+03,6.69624014191e+04,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_190","Loudoun Formation"]
[2.10591441962e+04,3.88653294382e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_191","Weverton Formation, Owens Creek Member"]
[1.34080696307e+04,1.97269242156e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_192","Harpers Formation"]
[7.70570867218e+04,4.12231755569e+07,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_193","Weverton Formation, Maryland Heights Member"]
[3.01957371707e+04,7.77994500132e+06,"Trgc","certain","^gc",null,"DS1","Limestone conglomerate marks the western edge of the Gettysburg Basin in Maryland and is similar in appearance and position to the Leesburg Formation in the Culpeper Basin.","MUP_194","Gettysburg Formation, conglomerate"]
[1.94864412518e+04,1.14338623458e+06,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_195","New Oxford Formation, sandstone"]
[3.91386933932e+03,7.69532297285e+05,"Trg","certain","^g",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained siltstone, claystone, mudstone, and fine-grained sandstone.","MUP_196","Gettysburg Formation"]
[2.55988748009e+03,6.78612385268e+04,"Trgc","certain","^gc",null,"DS1","Limestone conglomerate marks the western edge of the Gettysburg Basin in Maryland and is similar in appearance and position to the Leesburg Formation in the Culpeper Basin.","MUP_197","Gettysburg Formation, conglomerate"]
[6.64655449244e+03,2.59135164514e+06,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_198","Frederick Formation, Rocky Springs Station Member"]
[4.25933707235e+03,2.02582243442e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_199","New Oxford Formation, sandstone"]
[2.08302815337e+03,4.39510268106e+04,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_200","New Oxford Formation, sandstone"]
[5.18360147890e+03,2.16407658844e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_201","New Oxford Formation, sandstone"]
[8.69715781316e+03,3.09171370641e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_202","New Oxford Formation, sandstone"]
[4.46474267403e+04,5.45552218429e+06,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_203","New Oxford Formation, Irishtown Member"]
[1.67734028502e+04,4.31928573999e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_204","Weverton Formation, Owens Creek Member"]
[4.70742021572e+04,1.52520822791e+07,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_205","Frederick Formation, Rocky Springs Station Member"]
[3.49379835907e+03,1.57418830668e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_206","New Oxford Formation, sandstone"]
[1.82530861019e+04,2.93123124231e+06,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_207","Frederick Formation, Adamstown Member"]
[1.59594279447e+03,3.41882061215e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_208","Frederick Formation, Rocky Springs Station breccia"]
[1.71339900605e+04,7.36998087564e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_209","Jurassic Dikes"]
[2.52083949457e+04,1.47741571902e+06,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_210","Jurassic Dikes"]
[5.49642077490e+03,1.82947273379e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_211","New Oxford Formation, sandstone"]
[5.65153289713e+03,1.86368595856e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_212","New Oxford Formation, sandstone"]
[4.95023109988e+03,1.52692246043e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_213","New Oxford Formation, sandstone"]
[2.87943612312e+03,6.23910944629e+04,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_214","New Oxford Formation, sandstone"]
[7.78694647196e+03,1.48887309607e+06,"CZip","certain","_Zip",null,"DS1","Light olive-gray and greenish-gray, chlorite phyllite and metasiltstone.","MUP_215","Ijamsville Chlorite Phyllite"]
[1.31824250131e+05,4.81370100536e+07,"CZi","certain","_Zi",null,"DS1","Dusky blue, grayish-blue, very dusky red-purple, greenish-gray to pale olive phyllite, phyllonite, and minor slate. Phyllite contains mostly muscovite and chlorite. Lustrous sheen from mica and dark color results from abundant hematite dust.","MUP_216","Ijamsville Phyllite"]
[4.94831056489e+04,1.12603667902e+07,"Car","certain","_ar",null,"DS1","Thickly bedded, greenish-black to grayish-black, very fine-grained to fine-grained, burrow-mottled silty sandstone, interbedded with medium-gray to grayish-black, phyllitic shales 1 to 3 m thick.","MUP_217","Araby Formation"]
[5.11352201316e+05,8.49271638076e+07,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_218","Sams Creek Formation, tuffaceous phyllite"]
[6.00354944399e+03,2.01877324205e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_219","Ijamsville Phyllite, conglomeratic metagraywacke"]
[7.57781770382e+04,2.01908029097e+07,"CZip","certain","_Zip",null,"DS1","Light olive-gray and greenish-gray, chlorite phyllite and metasiltstone.","MUP_220","Ijamsville Chlorite Phyllite"]
[5.66218750930e+03,7.08204424012e+05,"CZip","certain","_Zip",null,"DS1","Light olive-gray and greenish-gray, chlorite phyllite and metasiltstone.","MUP_221","Ijamsville Chlorite Phyllite"]
[3.59452171067e+03,1.59775610753e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_222","New Oxford Formation, sandstone"]
[7.70990059594e+03,3.94190769455e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_223","New Oxford Formation, sandstone"]
[5.61872135139e+03,1.86407056348e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_224","New Oxford Formation, sandstone"]
[5.54374132771e+04,4.54382918990e+06,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_225","Frederick Formation, Monocacy Member"]
[4.81857784543e+04,1.35274308665e+06,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_226","Frederick Formation, Monocacy Member, shale bed"]
[2.06865825763e+04,3.81792396135e+06,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_227","Frederick Formation, Rocky Springs Station Member"]
[3.45400554555e+03,1.14241248535e+05,"Trns","certain","^ns",null,"DS1","Interbedded, light reddish-gray to reddish-brown sandstone. Sandstones exhibit sharp bases with shale-pebble lag conglomerates, and fining upward character.","MUP_228","New Oxford Formation, sandstone"]
[1.26513222179e+03,3.14626645566e+04,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_229","Frederick Formation, Adamstown Member"]
[1.33733206877e+03,1.08506548078e+05,"Ogw","certain","Ogw",null,"DS1","Thin-bedded, dark-gray, fine-grained limestone interbedded with medium-bedded, bioturbated, dark-gray, fine-grained limestone, and thin, wavy bedded limestone with tan, dolomitic partings.","MUP_230","Grove Formation, Woodsboro Member"]
[1.00859598022e+03,4.90824490775e+04,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_231","Grove Formation, Fountain Rock Member"]
[1.31529131679e+03,8.61358313666e+04,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_232","Frederick Formation, Lime Kiln Member"]
[9.19696413298e+02,4.80609518827e+04,"Ogw","certain","Ogw",null,"DS1","Thin-bedded, dark-gray, fine-grained limestone interbedded with medium-bedded, bioturbated, dark-gray, fine-grained limestone, and thin, wavy bedded limestone with tan, dolomitic partings.","MUP_233","Grove Formation, Woodsboro Member"]
[9.42321047341e+02,4.87825019941e+04,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_234","Grove Formation, Fountain Rock Member"]
[1.14375065853e+03,8.00269028769e+04,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_235","Frederick Formation, Lime Kiln Member"]
[8.12787842793e+02,3.02043280218e+04,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_236","Frederick Formation, Adamstown Member"]
[1.66586614139e+04,3.13294740128e+06,"Ogw","certain","Ogw",null,"DS1","Thin-bedded, dark-gray, fine-grained limestone interbedded with medium-bedded, bioturbated, dark-gray, fine-grained limestone, and thin, wavy bedded limestone with tan, dolomitic partings.","MUP_237","Grove Formation, Woodsboro Member"]
[4.95047705519e+04,1.80404191581e+07,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_238","Grove Formation, Fountain Rock Member"]
[1.81708559409e+03,9.34033298941e+04,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_239","Grove Formation, Fountain Rock Member"]
[4.66783386480e+03,4.02887693793e+05,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_240","Frederick Formation, Lime Kiln Member"]
[1.08483913489e+04,7.53991188171e+05,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_241","Frederick Formation, Adamstown Member"]
[1.68307328308e+03,4.00522771381e+04,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_242","Grove Formation, Ceresville Member"]
[1.09188694368e+03,3.89734768105e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_243","Sams Creek Formation, marble"]
[2.83688304469e+03,2.30491725240e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_244","Sams Creek Formation, metabasalt"]
[3.66054745278e+04,1.89078362087e+06,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_245","Grove Formation, Ceresville Member"]
[4.59000819126e+04,1.05168545102e+07,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_246","Frederick Formation, Lime Kiln Member"]
[8.14872272176e+03,2.38684208413e+05,"Ogfs","certain","Ogfs",null,"DS1","Two cross-bedded sandstone units recognized in the middle of the formation were identified and traced.","MUP_247","Grove Formation, Fountain Rock Member, sandstone"]
[1.15919096565e+04,9.79236928009e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_248","Sams Creek Formation, metabasalt"]
[2.93426883990e+03,1.29262773996e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_249","Ijamsville Phyllite, conglomeratic metagraywacke"]
[1.30866106399e+03,4.47552495846e+04,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_250","New Oxford Formation, Irishtown Member"]
[2.55798257139e+03,1.18945419780e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_251","Sams Creek Formation, marble"]
[6.79293971253e+02,2.47106738048e+04,"Trni","certain","^ni",null,"DS1","Light reddish-gray, subangular to subrounded, quartz and limestone conglomerate.","MUP_252","New Oxford Formation, Irishtown Member"]
[2.19392380965e+04,5.47037071000e+06,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_253","Frederick Formation, Adamstown Member"]
[5.04084325005e+03,2.53837335390e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_254","Ijamsville Phyllite, conglomeratic metagraywacke"]
[7.68643482046e+03,3.76922818962e+05,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_255","Frederick Formation, Rocky Springs Station Member"]
[1.26635249277e+03,6.41005371168e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_256","Sams Creek Formation, marble"]
[1.37333516842e+03,3.35047488935e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_257","Sams Creek Formation, marble"]
[2.32236050873e+03,3.80338199421e+04,"Ogfs","certain","Ogfs",null,"DS1","Two cross-bedded sandstone units recognized in the middle of the formation were identified and traced.","MUP_258","Grove Formation, Fountain Rock Member, sandstone"]
[2.15613831294e+04,6.72906502460e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_259","Jurassic Dikes"]
[1.56379616320e+03,2.11192064389e+04,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_260","Frederick Formation, Adamstown Member"]
[4.50918537049e+03,3.20658106346e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_261","Ijamsville Phyllite, conglomeratic metagraywacke"]
[2.04023746812e+03,5.79818425674e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_262","Sams Creek Formation, quartzite"]
[4.59103319534e+03,2.64194201527e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_263","Ijamsville Phyllite, conglomeratic metagraywacke"]
[1.36357660921e+05,1.25936457572e+08,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_264","Conococheague Formation, Zullinger Member"]
[1.60125927859e+05,1.86133603969e+07,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_265","Conococheague Formation, Big Spring Station Member"]
[1.40706740456e+05,6.57768121120e+07,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_266","Elbrook Formation"]
[2.98987499973e+04,2.76989922836e+06,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_267","Waynesboro Formation, Chewsville Member"]
[2.83159546379e+04,4.55705831948e+06,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_268","Waynesboro Formation, Cavetown Member"]
[2.46074104685e+04,1.44679010518e+06,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_269","Waynesboro Formation, Red Run Member"]
[2.90505527229e+04,5.56511913989e+06,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_270","Tomstown Formation, Dargan Member"]
[9.15216920809e+03,6.00408872771e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_271","Tomstown Formation, Benevola Member"]
[9.04959131165e+03,7.22684204914e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_272","Tomstown Formation, Fort Duncan Member"]
[1.78407319682e+04,8.50695828603e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_273","Tomstown Formation, Bolivar Heights Member"]
[3.34607284205e+04,1.84166359155e+06,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_274","Tomstown Formation, Benevola Member"]
[2.60975332112e+04,1.62240375644e+06,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_275","Tomstown Formation, Fort Duncan Member"]
[6.76808589357e+03,6.91399612229e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_276","Tomstown Formation, Fort Duncan Member"]
[2.37611350152e+03,1.09794151338e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_277","Tomstown Formation, Benevola Member"]
[3.23130231015e+04,1.23379260406e+07,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_278","Elbrook Formation"]
[1.56121447527e+04,5.48329725695e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_279","Waynesboro Formation, Red Run Member"]
[7.80655461907e+04,1.71398166987e+07,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_280","Tomstown Formation, Dargan Member"]
[2.05119533384e+04,4.93062996336e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_281","Jurassic Dikes"]
[4.53695944032e+04,2.38213674138e+06,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_282","Tomstown Formation, Benevola Member"]
[4.69878563260e+04,4.58573590045e+06,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_283","Tomstown Formation, Fort Duncan Member"]
[8.15878009137e+03,1.27942138243e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_284","Tomstown Formation, Bolivar Heights Member"]
[1.32450097217e+04,2.53780451563e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_285","Harpers Formation"]
[1.26797737751e+04,2.54783316712e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_286","Weverton Formation, Owens Creek Member"]
[2.74447940694e+03,3.29763262163e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_287","Weverton Formation, Buzzard Knob Member"]
[3.01231203901e+04,2.31989017757e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_288","Tomstown Formation, Bolivar Heights Member"]
[9.46044610028e+03,2.04936104278e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_289","Harpers Formation"]
[8.48864539001e+03,2.45990137127e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_290","Harpers Formation, metasandstone"]
[5.55331744679e+04,9.42249781248e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_291","Harpers Formation"]
[2.09807239534e+03,1.52702470116e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_292","Conococheague Formation, Big Spring Station Member"]
[1.22501057003e+04,3.64580795137e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_293","Harpers Formation, metasandstone"]
[3.58209062800e+03,2.83825723908e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_294","Conococheague Formation, Big Spring Station Member"]
[8.75429492794e+03,6.20865922197e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_295","Tomstown Formation, Benevola Member"]
[5.02949024725e+03,2.61825321568e+05,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_296","Tomstown Formation, Bolivar Heights Member"]
[7.27558739497e+03,6.08842473964e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_297","Tomstown Formation, Fort Duncan Member"]
[3.94219219008e+04,9.94351767107e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_298","Antietam Formation"]
[4.68743201196e+03,2.81751034371e+05,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_299","Tomstown Formation, Bolivar Heights Member"]
[1.27997283382e+04,1.19280590521e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_300","Loudoun Formation"]
[2.15322273773e+03,1.41001855827e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_301","Weverton Formation, Buzzard Knob Member"]
[3.77711567825e+04,4.22429817845e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_302","Weverton Formation, Owens Creek Member"]
[6.71063002898e+03,1.06131588576e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_303","Antietam Formation"]
[9.82925914940e+03,2.53490698890e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_304","Harpers Formation"]
[3.48605539953e+04,6.21629853775e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_305","Weverton Formation, Buzzard Knob Member"]
[2.02286954616e+03,1.78737182227e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_306","Conococheague Formation, Big Spring Station Member"]
[1.67267343237e+03,1.53951485223e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_307","Conococheague Formation, Zullinger Member"]
[4.25722901820e+03,9.64423771363e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_308","Conococheague Formation, Zullinger Member"]
[3.37400162280e+04,2.59743576786e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_309","Weverton Formation, Maryland Heights Member"]
[3.68494590831e+04,3.39700928992e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_310","Weverton Formation, Maryland Heights Member"]
[3.32459723237e+04,5.29564000152e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_311","Weverton Formation, Buzzard Knob Member"]
[7.12869559299e+03,1.82088271044e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_312","Harpers Formation, metasandstone"]
[5.14326913677e+03,1.40247147995e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_313","Weverton Formation, Buzzard Knob Member"]
[5.70852544110e+04,1.90298334362e+07,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_314","Harpers Formation"]
[3.01735477550e+04,2.53178056692e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_315","Weverton Formation, Owens Creek Member"]
[3.09639152109e+03,2.29075995073e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_316","Conococheague Formation, Big Spring Station Member"]
[2.88426264671e+04,9.47819849706e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_317","Loudoun Formation"]
[2.30140443198e+04,6.55903995369e+06,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_318","Catoctin Formation, metabasalt"]
[4.54890775477e+03,1.71822228610e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_319","Catoctin Formation, metarhyolite"]
[2.38851474880e+04,6.75024610890e+06,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_320","Catoctin Formation, metabasalt"]
[3.48598884337e+03,6.73800296314e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_321","Conococheague Formation, Zullinger Member"]
[2.83530575008e+04,5.00486425810e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_322","Harpers Formation"]
[2.68868105025e+03,7.70795614216e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_323","Catoctin Formation, metarhyolite"]
[1.25508219329e+04,4.36457431117e+05,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_324","Swift Run Formation, quartzite"]
[1.17733075224e+04,1.65866536497e+06,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_325","Basement gneiss complex, leucocratic gneiss"]
[5.69113121273e+02,1.70151340040e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_326","Swift Run Formation, phyllite"]
[1.03156442244e+03,2.00243768278e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_327","Jurassic Dikes"]
[1.00515367081e+03,1.89740099270e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_328","Jurassic Dikes"]
[1.81720745654e+03,5.80252031510e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_329","Swift Run Formation, phyllite"]
[2.21802615025e+04,4.67678065844e+05,"Chma","certain","_hma",null,"DS1","Light-to medium-gray, coarse grained to conglomeratic, cross-bedded quartzite, commonly less than 30 feet (10 m) in thickness.","MUP_330","Harpers Formation, Mont Alto Member"]
[6.27299197256e+03,4.07389095687e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_331","Tomstown Formation, Fort Duncan Member"]
[2.25764007790e+04,3.53876373795e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_332","Loudoun Formation"]
[3.42549475887e+03,3.73705167464e+05,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_333","Basement gneiss complex, biotite gneiss"]
[7.61472677194e+03,1.08856533622e+06,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss, medium-grained, granular, massive or poorly foliated, weathers light olive-gray, pale olive, or greenish gray","MUP_334","Basement gneiss complex, hornblende gneiss"]
[5.94128135014e+02,1.30416128255e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_335","Swift Run Formation, phyllite"]
[6.18714963472e+03,9.87875093418e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_336","Jurassic Dikes"]
[5.71631770189e+03,1.07038706226e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_337","Jurassic Dikes"]
[1.81170220647e+04,3.29167881085e+06,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_338","Basement gneiss complex, leucocratic gneiss"]
[9.86342304621e+03,2.25576749205e+06,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_339","Basement gneiss complex, leucocratic gneiss"]
[4.88734058216e+03,2.26299844434e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_340","Basement gneiss complex, leucocratic gneiss"]
[8.63322316648e+03,1.97601345436e+05,"Chma","certain","_hma",null,"DS1","Light-to medium-gray, coarse grained to conglomeratic, cross-bedded quartzite, commonly less than 30 feet (10 m) in thickness.","MUP_341","Harpers Formation, Mont Alto Member"]
[1.26068475526e+03,1.93073123936e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_342","Swift Run Formation, phyllite"]
[2.12588747185e+03,8.23739199594e+04,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_343","Tomstown Formation, Bolivar Heights Member"]
[1.28992128196e+04,3.55385091651e+06,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss, medium-grained, granular, massive or poorly foliated, weathers light olive-gray, pale olive, or greenish gray","MUP_344","Basement gneiss complex, hornblende gneiss"]
[1.73290602856e+03,6.04076016577e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_345","Swift Run Formation, phyllite"]
[1.30413188575e+03,5.65055686362e+04,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_346","Antietam Formation"]
[1.59022387634e+03,6.04408862627e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_347","Swift Run Formation, phyllite"]
[1.16519932505e+04,5.56227462530e+05,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_348","Swift Run Formation, quartzite"]
[4.67380909746e+03,4.28034303785e+05,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss, medium-grained, granular, massive or poorly foliated, weathers light olive-gray, pale olive, or greenish gray","MUP_349","Basement gneiss complex, hornblende gneiss"]
[2.24672798854e+03,3.74938535914e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_350","Catoctin Formation, mafic dikes"]
[4.80711963423e+02,8.40084535969e+03,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_351","Swift Run Formation, phyllite"]
[3.60956323814e+03,2.70719999123e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_352","Tomstown Formation, Fort Duncan Member"]
[1.77190830387e+04,5.96352702266e+06,"Ygt","certain","Ygt",null,"DS1","Fine- to medium-grained, very light gray, finely banded to indistinctly foliated quartz-microcline-plagioclase gneiss. Similar to leucocratic gneiss, but with scattered garnets. Weathers light-gray to yellowish.","MUP_353","Basement gneiss complex, garnet gneiss"]
[2.80912333916e+03,2.76095907111e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_354","Tomstown Formation, Benevola Member"]
[2.12284522634e+03,1.53515830704e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_355","Tomstown Formation, Fort Duncan Member"]
[1.67848148949e+03,7.33158387638e+04,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_356","Tomstown Formation, Benevola Member"]
[1.26015616174e+03,5.40466039219e+04,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_357","Tomstown Formation, Dargan Member"]
[1.16664976634e+04,2.17899185495e+05,"Chma","certain","_hma",null,"DS1","Light-to medium-gray, coarse grained to conglomeratic, cross-bedded quartzite, commonly less than 30 feet (10 m) in thickness.","MUP_358","Harpers Formation, Mont Alto Member"]
[1.32189151942e+03,1.69129902459e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_359","Catoctin Formation, mafic dikes"]
[3.24756362566e+03,8.27351403481e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_360","Jurassic Dikes"]
[7.06867831295e+02,9.80390887665e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_361","Catoctin Formation, mafic dikes"]
[7.40210739706e+02,1.20539680054e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_362","Catoctin Formation, mafic dikes"]
[8.78861607008e+02,8.94826393703e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_363","Catoctin Formation, mafic dikes"]
[5.42251611694e+03,6.51941183858e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_364","Basement gneiss complex, leucocratic gneiss"]
[9.15267878520e+02,1.33221754454e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_365","Catoctin Formation, mafic dikes"]
[3.52522132474e+04,7.68769737762e+06,"Ygt","certain","Ygt",null,"DS1","Fine- to medium-grained, very light gray, finely banded to indistinctly foliated quartz-microcline-plagioclase gneiss. Similar to leucocratic gneiss, but with scattered garnets. Weathers light-gray to yellowish.","MUP_366","Basement gneiss complex, garnet gneiss"]
[1.35448026790e+03,2.90808313053e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_367","Catoctin Formation, mafic dikes"]
[8.31750466225e+02,1.10745104419e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_368","Catoctin Formation, mafic dikes"]
[8.00027174814e+02,1.26367231867e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_369","Catoctin Formation, mafic dikes"]
[3.75229157933e+03,3.02468029919e+05,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_370","Antietam Formation"]
[2.78069608563e+03,1.95292589406e+05,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_371","Tomstown Formation, Bolivar Heights Member"]
[2.49758671572e+03,2.09222605996e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_372","Tomstown Formation, Fort Duncan Member"]
[3.85190593269e+03,6.62764464476e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_373","Jurassic Dikes"]
[1.77593211984e+03,6.03488097087e+04,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_374","Tomstown Formation, Benevola Member"]
[1.48274908505e+03,5.91694203907e+04,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_375","Tomstown Formation, Dargan Member"]
[4.15418764691e+03,7.33127675725e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_376","Jurassic Dikes"]
[1.06947424776e+03,1.37389025704e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_377","Catoctin Formation, mafic dikes"]
[1.60606841246e+03,1.96489222158e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_378","Catoctin Formation, mafic dikes"]
[1.33149783681e+03,2.10530436712e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_379","Catoctin Formation, mafic dikes"]
[1.28684786708e+03,1.50244890170e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_380","Catoctin Formation, mafic dikes"]
[9.56602815784e+02,1.56793956954e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_381","Catoctin Formation, mafic dikes"]
[3.36793561096e+03,4.48989885471e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_382","Jurassic Dikes"]
[3.62389482590e+03,1.63428428339e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_383","Catoctin Formation, metabasalt"]
[1.03859843241e+03,1.67326859289e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_384","Catoctin Formation, mafic dikes"]
[9.24884064923e+02,1.27069331383e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_385","Catoctin Formation, mafic dikes"]
[2.19167479068e+03,3.79261877762e+04,"Chma","certain","_hma",null,"DS1","Light-to medium-gray, coarse grained to conglomeratic, cross-bedded quartzite, commonly less than 30 feet (10 m) in thickness.","MUP_386","Harpers Formation, Mont Alto Member"]
[1.70838430023e+03,1.92176802691e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_387","Catoctin Formation, mafic dikes"]
[1.03794782680e+03,2.86091164553e+04,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_388","Harpers Formation"]
[1.26580579289e+03,1.14811072321e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_389","Catoctin Formation, mafic dikes"]
[1.90888363902e+03,6.82377880318e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_390","Catoctin Formation, metabasalt"]
[9.72385838322e+02,7.87837373464e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_391","Catoctin Formation, mafic dikes"]
[2.02447895916e+03,3.13911507679e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_392","Catoctin Formation, mafic dikes"]
[7.80900612691e+02,1.04819152272e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_393","Catoctin Formation, mafic dikes"]
[6.77464159123e+02,5.51677589596e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_394","Catoctin Formation, mafic dikes"]
[7.24275663985e+02,1.09807736886e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_395","Catoctin Formation, mafic dikes"]
[7.81959579395e+02,1.05655876202e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_396","Catoctin Formation, mafic dikes"]
[7.09549379788e+02,6.40075930190e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_397","Catoctin Formation, mafic dikes"]
[1.10849961004e+03,1.72946948286e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_398","Catoctin Formation, mafic dikes"]
[6.86270818557e+02,9.79832757842e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_399","Catoctin Formation, mafic dikes"]
[1.14777932633e+03,1.13346799909e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_400","Jurassic Dikes"]
[9.86189500493e+02,1.38332059556e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_401","Catoctin Formation, mafic dikes"]
[1.03209851191e+03,1.27493335372e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_402","Catoctin Formation, mafic dikes"]
[4.86526955363e+02,5.63505478592e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_403","Catoctin Formation, mafic dikes"]
[1.38464927253e+03,2.20600258724e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_404","Catoctin Formation, mafic dikes"]
[8.02778303657e+02,1.28359325015e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_405","Catoctin Formation, mafic dikes"]
[5.53023486129e+02,7.17016374076e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_406","Catoctin Formation, mafic dikes"]
[1.26319623116e+03,1.87258255281e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_407","Catoctin Formation, mafic dikes"]
[1.08543435025e+03,1.66480606303e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_408","Catoctin Formation, mafic dikes"]
[1.37377787787e+03,1.75031088908e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_409","Catoctin Formation, mafic dikes"]
[1.15143959205e+03,9.45941074871e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_410","Catoctin Formation, mafic dikes"]
[9.37019103776e+02,1.42536630725e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_411","Catoctin Formation, mafic dikes"]
[9.78828498925e+02,2.45823951477e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_412","Catoctin Formation, phyllite unit 1"]
[1.57887097646e+03,3.43516955534e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_413","Catoctin Formation, phyllite unit 1"]
[6.42800717990e+03,1.74255186498e+05,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_414","Catoctin Formation, phyllite unit 1"]
[2.32054684507e+03,4.33149366235e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_415","Catoctin Formation, phyllite unit 2"]
[4.82178284931e+03,1.76181939948e+05,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_416","Catoctin Formation, phyllite unit 1"]
[9.00801307288e+02,2.60781081963e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_417","Catoctin Formation, phyllite unit 2"]
[5.73938225560e+03,2.55710164411e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_418","Catoctin Formation, metarhyolite"]
[1.00800501344e+03,2.13788847332e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_419","Catoctin Formation, phyllite unit 2"]
[1.16727079551e+03,2.70437015168e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_420","Catoctin Formation, phyllite unit 1"]
[8.16417075639e+02,1.84361923639e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_421","Catoctin Formation, phyllite unit 2"]
[5.91734790227e+02,1.04308435788e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_422","Catoctin Formation, phyllite unit 1"]
[5.11026838949e+02,1.09828662941e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_423","Catoctin Formation, phyllite unit 2"]
[4.10462284777e+02,4.72072409303e+03,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_424","Catoctin Formation, flow banded metarhyolite"]
[4.72046831653e+02,7.57854275550e+03,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_425","Catoctin Formation, porphyritic metarhyolite"]
[2.38998997005e+03,6.19439466279e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_426","Catoctin Formation, phyllite unit 1"]
[5.40069718576e+02,1.89635155802e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_427","Catoctin Formation, flow banded metarhyolite"]
[1.22178870412e+03,2.48768547983e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_428","Catoctin Formation, phyllite unit 1"]
[5.44412428665e+02,9.56781510912e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_429","Catoctin Formation, phyllite unit 2"]
[6.17438108300e+02,1.15947480331e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_430","Catoctin Formation, metarhyolite"]
[6.25824019118e+02,1.50337598515e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_431","Catoctin Formation, phyllite unit 1"]
[7.88253864234e+02,2.16644238955e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_432","Catoctin Formation, metarhyolite"]
[6.37023009018e+02,2.29308480748e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_433","Catoctin Formation, flow banded metarhyolite"]
[5.19296084098e+02,8.25370033976e+03,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_434","Catoctin Formation, flow banded metarhyolite"]
[4.48844252581e+02,8.99849417861e+03,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_435","Catoctin Formation, metarhyolite"]
[7.44157868247e+02,1.31036819548e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_436","Catoctin Formation, phyllite unit 1"]
[4.42138992229e+02,1.10786718667e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_437","Catoctin Formation, flow banded metarhyolite"]
[4.09051842616e+03,7.67768200204e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_438","Weverton Formation, Buzzard Knob Member"]
[3.01451063475e+03,1.45533449066e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_439","Catoctin Formation, metarhyolite"]
[1.61474155967e+03,3.97376115658e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_440","Catoctin Formation, phyllite unit 1"]
[4.31055566479e+02,7.00507241568e+03,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_441","Catoctin Formation, phyllite unit 1"]
[6.41175381505e+02,1.35460909157e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_442","Catoctin Formation, phyllite unit 1"]
[2.17902086715e+03,5.95396231579e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_443","Catoctin Formation, phyllite unit 1"]
[5.80613684218e+02,1.47254005362e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_444","Catoctin Formation, metarhyolite"]
[1.45279493510e+03,3.37995860850e+04,"Zcp3","certain","Zcp3",null,"DS1","Medium dark gray, medium bluish-gray, or light-gray phyllite containing blebs 2 to 4 mm long.","MUP_445","Catoctin Formation, phyllite unit 3"]
[9.01982680843e+02,2.34579289372e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_446","Catoctin Formation, flow banded metarhyolite"]
[1.94847009772e+03,1.33510972510e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_447","Catoctin Formation, metarhyolite"]
[3.18481582499e+02,5.55085752504e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_448","Catoctin Formation, phyllite unit 2"]
[8.55022588322e+02,1.92215707211e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_449","Catoctin Formation, phyllite unit 2"]
[6.56985562094e+02,1.23787370280e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_450","Catoctin Formation, phyllite unit 1"]
[2.28405691125e+03,7.75439413636e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_451","Catoctin Formation, phyllite unit 2"]
[1.03438822169e+03,2.40396118621e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_452","Catoctin Formation, flow banded metarhyolite"]
[1.93306716021e+03,4.96908104226e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_453","Catoctin Formation, phyllite unit 2"]
[3.58926559638e+02,5.74587163767e+03,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_454","Catoctin Formation, phyllite unit 1"]
[7.08805473402e+02,2.75549435796e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_455","Catoctin Formation, flow banded metarhyolite"]
[1.12623725498e+03,2.20693281153e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_456","Catoctin Formation, flow banded metarhyolite"]
[5.47967166088e+02,1.57258412229e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_457","Catoctin Formation, flow banded metarhyolite"]
[7.81004799937e+02,2.89347554621e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_458","Catoctin Formation, phyllite unit 2"]
[2.40169857163e+03,7.56349190011e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_459","Catoctin Formation, metarhyolite"]
[6.09824455095e+02,1.07399891238e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_460","Catoctin Formation, phyllite unit 1"]
[5.84449591107e+02,1.76035553382e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_461","Catoctin Formation, flow banded metarhyolite"]
[2.03780100837e+03,5.59545862959e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_462","Catoctin Formation, phyllite unit 1"]
[1.29860362452e+03,4.40718300030e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_463","Catoctin Formation, metarhyolite"]
[2.06952419516e+02,2.44803151493e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_464","Catoctin Formation, phyllite unit 2"]
[2.65860198359e+02,4.99420308998e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_465","Catoctin Formation, phyllite unit 2"]
[3.27688842564e+02,5.60049364039e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_466","Catoctin Formation, phyllite unit 2"]
[2.80547084825e+02,4.16651143741e+03,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_467","Catoctin Formation, phyllite unit 2"]
[1.07313074513e+03,2.54936729123e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_468","Catoctin Formation, phyllite unit 1"]
[6.17790543988e+02,1.09176066668e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_469","Catoctin Formation, phyllite unit 2"]
[8.61992720682e+02,2.61375680278e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_470","Catoctin Formation, flow banded metarhyolite"]
[2.12787920550e+03,7.70031798146e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_471","Swift Run Formation, quartzite"]
[1.69789245827e+03,3.94500979229e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_472","Swift Run Formation, quartzite"]
[4.47809862350e+02,1.11506456712e+04,"Zcmp","certain","Zcmp",null,"DS1","Metabasalt, greenish-gray to bluish-green rock that weathers bluish-gray to dark greenish-gray.","MUP_473","Catoctin Formation, porphyritic metabasalt"]
[4.46104406861e+03,5.79575026464e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_474","Basement gneiss complex, leucocratic gneiss"]
[1.36439196174e+04,1.76331113776e+06,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_475","Basement gneiss complex, leucocratic gneiss"]
[8.36545590676e+02,3.09284696015e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_476","Catoctin Formation, phyllite unit 2"]
[5.88897025285e+02,1.28240500192e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_477","Catoctin Formation, flow banded metarhyolite"]
[5.07682781519e+02,9.18091222543e+03,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_478","Catoctin Formation, phyllite unit 1"]
[4.96280572919e+02,9.65272054724e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_479","Catoctin Formation, mafic dikes"]
[3.50044172717e+02,5.32760859346e+03,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_480","Catoctin Formation, phyllite unit 1"]
[5.60915463334e+02,8.54868898463e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_481","Jurassic Dikes"]
[1.39496712436e+03,2.80408053066e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_482","Jurassic Dikes"]
[1.01670971859e+03,1.83061981035e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_483","Swift Run Formation, quartzite"]
[4.67084134753e+03,1.26632766648e+05,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_484","Catoctin Formation, phyllite unit 1"]
[2.64398559507e+03,7.43434108515e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_485","Catoctin Formation, phyllite unit 1"]
[5.91796454052e+02,1.02631922272e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_486","Swift Run Formation, quartzite"]
[8.22172106193e+02,2.60858248834e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_487","Catoctin Formation, phyllite unit 2"]
[7.39768403442e+02,2.41890729099e+04,"Zcmp","certain","Zcmp",null,"DS1","Metabasalt, greenish-gray to bluish-green rock that weathers bluish-gray to dark greenish-gray.","MUP_488","Catoctin Formation, porphyritic metabasalt"]
[4.68401613354e+03,2.49835032643e+05,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_489","Swift Run Formation, quartzite"]
[5.28465405642e+03,3.88513423102e+05,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_490","Swift Run Formation, phyllite"]
[1.28825661271e+03,2.13445544241e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_491","Swift Run Formation, phyllite"]
[2.18202823969e+03,1.20028310546e+05,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_492","Swift Run Formation, quartzite"]
[6.07463375673e+03,1.45857682242e+06,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_493","Catoctin Formation, metabasalt"]
[4.61562070261e+03,1.84908222863e+05,"CZlc","certain","_Zlc",null,"DS1","Medium-bedded, medium light gray, grayish-yellow green or dusky blue conglomerate that weathers light-gray and greenish-gray or dusky blue.","MUP_494","Loudoun Formation, conglomerate"]
[1.02260741887e+03,1.42696217549e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_495","Swift Run Formation, quartzite"]
[8.24597270653e+02,3.69240186152e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_496","Swift Run Formation, phyllite"]
[9.34348649165e+02,1.70797843717e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_497","Swift Run Formation, quartzite"]
[9.51875339110e+02,1.52876031534e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_498","Catoctin Formation, mafic dikes"]
[8.50138211593e+02,2.04344926151e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_499","Swift Run Formation, phyllite"]
[6.26559622989e+02,2.24375052914e+04,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_500","Basement gneiss complex, leucocratic gneiss"]
[1.07655626124e+05,2.89423512408e+07,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_501","Basement gneiss complex, leucocratic gneiss"]
[9.31088770138e+02,1.81182470875e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_502","Swift Run Formation, phyllite"]
[2.49746074616e+03,9.62788307336e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_503","Basement gneiss complex, hornblende gneiss"]
[6.20521383733e+02,9.40864801943e+03,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_504","Swift Run Formation, quartzite"]
[3.06513498642e+02,5.68450939512e+03,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_505","Basement gneiss complex, leucocratic gneiss"]
[5.03947654800e+02,1.13608232250e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_506","Swift Run Formation, phyllite"]
[2.40453421428e+03,7.97773141551e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_507","Swift Run Formation, phyllite"]
[4.19402996611e+02,1.02928507288e+04,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_508","Basement gneiss complex, leucocratic gneiss"]
[2.43180954164e+03,8.68970071062e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_509","Swift Run Formation, quartzite"]
[8.99429578330e+02,2.25790656505e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_510","Swift Run Formation, quartzite"]
[2.36361889849e+03,5.95536747084e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_511","Catoctin Formation, phyllite unit 1"]
[4.93031190525e+02,9.35327708635e+03,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_512","Swift Run Formation, phyllite"]
[7.42469504459e+03,1.04168125935e+06,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_513","Basement gneiss complex, hornblende gneiss"]
[8.03233696604e+02,1.49563935158e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_514","Swift Run Formation, phyllite"]
[4.59945166259e+02,6.56845089533e+03,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_515","Basement gneiss complex, hornblende gneiss"]
[3.47789582904e+02,5.64796448535e+03,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_516","Swift Run Formation, quartzite"]
[1.08124654226e+03,2.26038262459e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_517","Catoctin Formation, mafic dikes"]
[3.01233528557e+03,2.03556895903e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_518","Basement gneiss complex, leucocratic gneiss"]
[3.44928184446e+02,5.76207249874e+03,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_519","Catoctin Formation, phyllite unit 1"]
[9.18901687942e+02,1.83236394709e+04,"Zcdf","certain","Zcdf",null,"DS1","Massive, light-gray to medium-gray felsite; weathers light orange brown. Contains very few small feldspar phenocrysts.","MUP_520","Catoctin Formation, felsic dikes"]
[1.16534622272e+03,2.00301942255e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_521","Catoctin Formation, mafic dikes"]
[9.76338510843e+02,2.02823762727e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_523","Catoctin Formation, mafic dikes"]
[2.88471973942e+03,2.46811629694e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_524","Basement gneiss complex, leucocratic gneiss"]
[7.53276231675e+02,1.32324925861e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_525","Catoctin Formation, mafic dikes"]
[2.78109713259e+03,1.07685370292e+05,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_526","Swift Run Formation, quartzite"]
[2.50102552250e+04,3.84234309636e+06,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_527","Basement gneiss complex, biotite gneiss"]
[9.56047127325e+02,1.27512691343e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_528","Jurassic Dikes"]
[1.35867449371e+03,2.72510512779e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_529","Catoctin Formation, mafic dikes"]
[9.81780299553e+02,1.79544333968e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_530","Swift Run Formation, phyllite"]
[3.81492479978e+02,5.04082314155e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_531","Jurassic Dikes"]
[2.63392828023e+03,6.88976010124e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_532","Catoctin Formation, mafic dikes"]
[1.51077070484e+03,2.78024010653e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_533","Swift Run Formation, phyllite"]
[1.26556535375e+03,3.01976538082e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_534","Swift Run Formation, phyllite"]
[2.76996490539e+03,5.35577820637e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_535","Catoctin Formation, mafic dikes"]
[7.24010743332e+02,1.06523549982e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_536","Catoctin Formation, mafic dikes"]
[5.36234321279e+02,6.54404919070e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_537","Catoctin Formation, mafic dikes"]
[1.03838021277e+03,4.75719041152e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_538","Basement gneiss complex, hornblende gneiss"]
[1.68245528168e+03,2.80767990189e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_539","Catoctin Formation, mafic dikes"]
[6.11832255343e+02,2.29922091798e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_540","Basement gneiss complex, hornblende gneiss"]
[1.09199260769e+03,1.76039151083e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_541","Catoctin Formation, mafic dikes"]
[2.58595967080e+03,4.88658054671e+04,"Zcdf","certain","Zcdf",null,"DS1","Massive, light-gray to medium-gray felsite; weathers light orange brown. Contains very few small feldspar phenocrysts.","MUP_542","Catoctin Formation, felsic dikes"]
[1.14783602746e+03,3.01445469260e+04,"Zcp2","certain","Zcp2",null,"DS1","Phyllite, greenish gray and very light gray; may be silicified; weathered surfaces commonly soft and soapy","MUP_543","Catoctin Formation, phyllite unit 2"]
[7.57581940822e+02,1.31376646267e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_544","Catoctin Formation, mafic dikes"]
[1.02364666366e+03,1.10547414603e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_545","Swift Run Formation, quartzite"]
[2.30796974848e+03,4.33708177308e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_546","Catoctin Formation, mafic dikes"]
[2.04914812311e+03,1.10901355525e+05,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_547","Basement gneiss complex, hornblende gneiss"]
[5.93940928314e+03,1.32221871404e+06,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_548","Basement gneiss complex, biotite gneiss"]
[1.69063021682e+03,3.86319758228e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_549","Catoctin Formation, mafic dikes"]
[8.46183515500e+02,1.00701846561e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_550","Catoctin Formation, mafic dikes"]
[6.13534291380e+02,7.83711130485e+03,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_551","Swift Run Formation, quartzite"]
[4.44550954486e+03,8.65745626476e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_552","Catoctin Formation, mafic dikes"]
[1.10404015251e+03,1.72753144655e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_553","Catoctin Formation, mafic dikes"]
[2.66446635251e+04,5.75972146968e+06,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_554","Basement gneiss complex, biotite gneiss"]
[2.54115132385e+03,5.36099712077e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_555","Catoctin Formation, mafic dikes"]
[7.32530498694e+02,9.41249835411e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_556","Catoctin Formation, mafic dikes"]
[1.50064119128e+03,2.83607986133e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_557","Catoctin Formation, mafic dikes"]
[4.50841776624e+03,1.07193612705e+05,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_558","Catoctin Formation, mafic dikes"]
[1.54309686918e+03,3.27279679494e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_559","Catoctin Formation, phyllite unit 1"]
[1.63176004073e+03,4.91684209557e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_560","Catoctin Formation, mafic dikes"]
[2.25593409835e+03,3.65153798023e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_561","Catoctin Formation, mafic dikes"]
[1.62229610221e+03,2.54108014363e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_562","Catoctin Formation, mafic dikes"]
[6.75093214741e+02,1.03766985108e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_563","Catoctin Formation, mafic dikes"]
[6.34276806513e+02,1.14880574252e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_564","Catoctin Formation, mafic dikes"]
[2.38801768521e+03,6.33471688896e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_565","Catoctin Formation, mafic dikes"]
[1.04588305247e+03,1.39377523791e+04,"Zsrq","certain","Zsrq",null,"DS1","Very light gray, thin-bedded, laminated and cross-laminated sericitic quartzite that weathers light greenish-gray to light-gray; and medium light gray, thick-bedded, coarse-grained, laminated quartzite, weathering light-gray.","MUP_566","Swift Run Formation, quartzite"]
[1.17442542692e+03,1.94605083196e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_567","Catoctin Formation, mafic dikes"]
[2.81866664054e+03,5.81778642479e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_568","Catoctin Formation, mafic dikes"]
[1.47364100641e+03,2.54340026659e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_569","Jurassic Dikes"]
[1.54302279110e+03,1.54537190448e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_570","Catoctin Formation, mafic dikes"]
[1.19564476409e+03,1.98027415466e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_571","Catoctin Formation, mafic dikes"]
[1.01658900286e+03,1.83901276101e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_572","Catoctin Formation, mafic dikes"]
[1.99011498152e+03,7.81311871918e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_573","Basement gneiss complex, hornblende gneiss"]
[6.22867387189e+02,2.18271354157e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_574","Basement gneiss complex, hornblende gneiss"]
[1.77896111209e+03,8.72972694524e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_575","Basement gneiss complex, hornblende gneiss"]
[2.33402876045e+03,4.19587884688e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_576","Catoctin Formation, mafic dikes"]
[1.27965588215e+03,2.00436821182e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_577","Catoctin Formation, mafic dikes"]
[2.44309602948e+03,4.07907697275e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_578","Catoctin Formation, mafic dikes"]
[3.61510040791e+03,9.87843977707e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_579","Catoctin Formation, mafic dikes"]
[8.39212144273e+02,1.21263966146e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_580","Catoctin Formation, mafic dikes"]
[9.64033496456e+02,1.73882577712e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_581","Catoctin Formation, mafic dikes"]
[1.05535989950e+03,1.72985738395e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_582","Catoctin Formation, mafic dikes"]
[2.18871720698e+03,7.40292017541e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_583","Catoctin Formation, mafic dikes"]
[2.20215078719e+03,4.26811854761e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_584","Catoctin Formation, mafic dikes"]
[3.19075527949e+03,9.87478419511e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_585","Catoctin Formation, mafic dikes"]
[5.32454014410e+04,2.27553104480e+07,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_586","Harpers Formation"]
[1.53325814587e+03,2.72407772689e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_587","Catoctin Formation, mafic dikes"]
[2.72393803707e+03,5.26096935012e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_588","Catoctin Formation, mafic dikes"]
[1.22014076356e+03,2.11888252252e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_589","Catoctin Formation, mafic dikes"]
[3.72552907658e+03,5.96093091736e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_590","Catoctin Formation, mafic dikes"]
[9.26631377805e+02,1.25339263805e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_591","Catoctin Formation, mafic dikes"]
[8.62997175510e+02,1.12773868583e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_592","Catoctin Formation, mafic dikes"]
[7.84778077916e+02,8.46749308122e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_593","Catoctin Formation, mafic dikes"]
[1.43945580635e+03,3.12419283099e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_594","Catoctin Formation, porphyritic metarhyolite"]
[2.63398049707e+03,4.20250606979e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_595","Catoctin Formation, mafic dikes"]
[9.95983467271e+02,1.70146634205e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_596","Catoctin Formation, mafic dikes"]
[7.89828101809e+02,2.51629986834e+04,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_597","Basement gneiss complex, paragneiss"]
[1.60025662650e+03,3.94639248945e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_598","Catoctin Formation, phyllite unit 1"]
[5.93760492683e+02,1.38033279369e+04,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_599","Basement gneiss complex, paragneiss"]
[4.91864307608e+03,2.10204929673e+05,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_600","Swift Run Formation, phyllite"]
[1.68132476042e+03,8.35582336650e+04,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_601","Basement gneiss complex, biotite gneiss"]
[1.63053697626e+03,1.51730708509e+05,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_602","Basement gneiss complex, paragneiss"]
[4.48217329935e+02,6.21443773898e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_603","Catoctin Formation, mafic dikes"]
[9.24908428207e+02,1.16978542589e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_604","Catoctin Formation, mafic dikes"]
[1.37913361683e+03,2.08375229562e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_605","Catoctin Formation, mafic dikes"]
[8.13955269230e+04,2.21708641426e+07,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_606","Basement gneiss complex, biotite gneiss"]
[4.27278688518e+03,3.80763420292e+05,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_607","Basement gneiss complex, paragneiss"]
[7.86084991350e+03,7.10800663554e+05,"Ygt","certain","Ygt",null,"DS1","Fine- to medium-grained, very light gray, finely banded to indistinctly foliated quartz-microcline-plagioclase gneiss. Similar to leucocratic gneiss, but with scattered garnets. Weathers light-gray to yellowish.","MUP_608","Basement gneiss complex, garnet gneiss"]
[1.13730359770e+03,1.82481096120e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_609","Catoctin Formation, mafic dikes"]
[3.12215300777e+03,7.38833118051e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_610","Catoctin Formation, mafic dikes"]
[1.71544452052e+03,1.38504826871e+05,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_611","Basement gneiss complex, paragneiss"]
[1.44072719581e+03,4.22403270937e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_612","Catoctin Formation, mafic dikes"]
[4.27601478598e+02,5.26112163992e+03,"Ygt","certain","Ygt",null,"DS1","Fine- to medium-grained, very light gray, finely banded to indistinctly foliated quartz-microcline-plagioclase gneiss. Similar to leucocratic gneiss, but with scattered garnets. Weathers light-gray to yellowish.","MUP_613","Basement gneiss complex, garnet gneiss"]
[3.19198282347e+02,3.72504264673e+03,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_614","Basement gneiss complex, hornblende gneiss"]
[5.62833269711e+03,1.25292441322e+05,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_615","Catoctin Formation, mafic dikes"]
[7.72984931951e+02,3.27597513531e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_616","Basement gneiss complex, hornblende gneiss"]
[1.02847886392e+04,2.05023895454e+06,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_617","Basement gneiss complex, hornblende gneiss"]
[2.10514915326e+03,1.21447224378e+05,"Ygp","certain","Ygp",null,"DS1","Fine- to medium-grained, tan to rusty red, highly foliated micaceous-quartz-garnet paragneiss to schist. Weathers to a yellowish-brown or very pale orange, schistose rock.","MUP_618","Basement gneiss complex, paragneiss"]
[4.51642756114e+02,6.06789287897e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_619","Catoctin Formation, mafic dikes"]
[2.46546277304e+03,5.08215987370e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_620","Catoctin Formation, mafic dikes"]
[1.54871169079e+03,2.84352732887e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_621","Catoctin Formation, mafic dikes"]
[1.77239879813e+03,3.40362314949e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_622","Catoctin Formation, mafic dikes"]
[5.46269050082e+02,7.75717724900e+03,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_623","Catoctin Formation, mafic dikes"]
[2.53361173852e+03,8.51969853939e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_624","Catoctin Formation, mafic dikes"]
[3.14795237036e+02,4.73250198697e+03,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_625","Swift Run Formation, phyllite"]
[1.23763436655e+03,2.09025205914e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_626","Jurassic Dikes"]
[1.37861571828e+03,1.00728390423e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_627","Catoctin Formation, mafic dikes"]
[2.88402254291e+02,4.00120821031e+03,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_628","Swift Run Formation, phyllite"]
[1.71304034733e+03,3.32685335672e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_629","Catoctin Formation, mafic dikes"]
[2.36131970884e+02,3.05437385621e+03,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_630","Swift Run Formation, phyllite"]
[1.38949937522e+03,6.87077199309e+04,"Ygh","certain","Ygh",null,"DS1","Biotite-hornblende-plagioclase gneiss; massive or pooly foliated","MUP_631","Basement gneiss complex, hornblende gneiss"]
[7.92008699041e+02,1.59817268641e+04,"Zsrp","certain","Zsrp",null,"DS1","Very light gray, dusky yellow green and very light greenish-gray, lustrous quartz sericite(?) phyllite that weathers grayish-orange to very light gray.","MUP_632","Swift Run Formation, phyllite"]
[3.53900649760e+03,9.28397518218e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_633","Catoctin Formation, mafic dikes"]
[2.57316483947e+03,7.42391722890e+04,"Zcd","certain","Zcd",null,"DS1","Typically dark greenish-gray to grayish olive-green, fine- to medium-grained metadiabase or metabasalt.","MUP_634","Catoctin Formation, mafic dikes"]
[3.90466618997e+02,7.70503048172e+03,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_635","Elbrook Formation"]
[2.11205464880e+03,1.60091395095e+05,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_636","Elbrook Formation"]
[1.29873148363e+04,1.32346419834e+06,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_637","Elbrook Formation"]
[3.30016900876e+03,2.31355934102e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_638","Waynesboro Formation, Chewsville Member"]
[3.25080516579e+03,3.26708651091e+05,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_639","Waynesboro Formation, Cavetown Member"]
[2.55532970936e+03,8.25753700601e+04,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_640","Waynesboro Formation, Red Run Member"]
[8.75287329948e+03,8.46159131015e+05,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_641","Tomstown Formation, Dargan Member"]
[7.60481533326e+03,2.56460313080e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_642","Tomstown Formation, Benevola Member"]
[7.33334160411e+03,3.82651343526e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_643","Tomstown Formation, Fort Duncan Member"]
[6.58119309991e+03,9.42184031837e+05,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_644","Tomstown Formation, Bolivar Heights Member"]
[2.40991121108e+03,1.08050845876e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_645","Waynesboro Formation, Red Run Member"]
[5.37561820409e+04,1.25996299694e+07,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_646","Waynesboro Formation, Cavetown Member"]
[3.82347680156e+04,2.37747079255e+06,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_647","Waynesboro Formation, Red Run Member"]
[1.53221153906e+04,4.33695574780e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_648","Tomstown Formation, Benevola Member"]
[1.57190720075e+04,1.78383494148e+06,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_649","Tomstown Formation, Fort Duncan Member"]
[1.62504662428e+04,2.19016081898e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_650","Tomstown Formation, Bolivar Heights Member"]
[3.47183703775e+04,9.04867170988e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_651","Harpers Formation"]
[7.15036520070e+03,7.21463193400e+05,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_652","Weverton Formation, Owens Creek Member"]
[3.24098343711e+03,4.46590881949e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_653","Weverton Formation, Maryland Heights Member"]
[1.82977893636e+03,1.54397981079e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_654","Waynesboro Formation, Chewsville Member"]
[2.72345395783e+04,4.97799289246e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_655","Weverton Formation, Buzzard Knob Member"]
[1.72984240092e+04,1.85029488044e+06,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_656","Waynesboro Formation, Red Run Member"]
[1.84817907634e+04,2.39367103698e+06,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_657","Waynesboro Formation, Cavetown Member"]
[1.85330301198e+04,1.13307842117e+06,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_658","Waynesboro Formation, Chewsville Member"]
[4.01155799094e+03,2.49618528432e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_659","Waynesboro Formation, Red Run Member"]
[1.40169337888e+03,9.08014011962e+04,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_660","Waynesboro Formation, Chewsville Member"]
[1.53185927634e+04,1.45891367499e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_661","Weverton Formation, Maryland Heights Member"]
[4.99933548756e+04,2.24482350734e+07,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_662","Elbrook Formation"]
[1.06100456779e+04,2.29725016348e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_663","Harpers Formation, metasandstone"]
[8.48865526213e+03,9.97639239783e+05,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_664","Weverton Formation, Owens Creek Member"]
[3.44556984354e+04,3.71246255361e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_665","Catoctin Formation, metarhyolite"]
[9.05428828050e+02,4.71133246799e+04,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_666","Waynesboro Formation, Chewsville Member"]
[8.82709684268e+03,1.82816720161e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_667","Harpers Formation, metasandstone"]
[8.74505320560e+03,4.97737024668e+05,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_668","Harpers Formation"]
[1.02724980332e+03,4.77624837754e+04,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_669","Waynesboro Formation, Chewsville Member"]
[2.63436147975e+04,3.31001856670e+06,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_670","Waynesboro Formation, Chewsville Member"]
[7.06905402183e+03,6.24990628687e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_671","Catoctin Formation, metarhyolite"]
[5.96328234713e+04,1.19464995399e+07,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_672","Catoctin Formation, metarhyolite"]
[4.28061723128e+04,9.04520687528e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray ribbony, burrow-mottled lime mudstone","MUP_673","Tomstown Formation, Bolivar Heights Member"]
[2.16617112307e+04,4.09072492675e+06,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_674","Catoctin Formation, metabasalt"]
[4.60802838236e+03,2.87757869914e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_675","Catoctin Formation, red metarhyolite"]
[5.22601362899e+03,1.52563094273e+05,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_676","Catoctin Formation, phyllite unit 1"]
[4.53073398382e+03,3.22634405711e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_677","Catoctin Formation, metabasalt"]
[9.33455679796e+03,1.86976386802e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_678","Antietam Formation"]
[1.29661118100e+04,3.05845232232e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_679","Harpers Formation"]
[2.43944606825e+04,3.70145930290e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_680","Weverton Formation, Owens Creek Member"]
[1.52307463045e+04,9.83465116707e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_681","Weverton Formation, Maryland Heights Member"]
[1.16409061636e+04,7.84435776977e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_682","Catoctin Formation, red metarhyolite"]
[1.34887368598e+04,2.48381390451e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_683","Weverton Formation, Buzzard Knob Member"]
[1.99058710497e+03,8.38588829892e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_684","Catoctin Formation, metabasalt"]
[8.46143272397e+03,3.89103135324e+05,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_685","Catoctin Formation, aphanitic metarhyolite"]
[1.39629732281e+04,1.33389141801e+06,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_686","Catoctin Formation, flow banded metarhyolite"]
[2.61151906442e+04,3.54249577266e+06,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_687","Catoctin Formation, flow banded metarhyolite"]
[1.24228624492e+04,6.55330049281e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_688","Loudoun Formation"]
[8.98839126184e+03,6.03957578617e+05,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_689","Catoctin Formation, aphanitic metarhyolite"]
[2.10770112562e+03,7.18905375916e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_690","Catoctin Formation, metabasalt"]
[1.16759739634e+04,2.92314302155e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_691","Catoctin Formation, metarhyolite"]
[3.46957736063e+03,1.33543886670e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_692","Catoctin Formation, flow banded metarhyolite"]
[4.99462107730e+03,3.43770695936e+05,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_693","Catoctin Formation, aphanitic metarhyolite"]
[2.53047000229e+04,2.92237859945e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_694","Catoctin Formation, metarhyolite"]
[1.81481454070e+03,5.47700126696e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_695","Catoctin Formation, metarhyolite"]
[3.26853059711e+03,1.26209581022e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_696","Catoctin Formation, metabasalt"]
[2.29061007144e+03,7.60577632060e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_697","Catoctin Formation, metarhyolite"]
[5.23539412452e+03,9.19395339542e+05,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_698","Antietam Formation"]
[1.81732343710e+04,3.90773496515e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_699","Harpers Formation"]
[4.79390343662e+03,2.18655080468e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_700","Catoctin Formation, flow banded metarhyolite"]
[9.00878809109e+02,4.12456223948e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_701","Catoctin Formation, porphyritic metarhyolite"]
[4.23905913672e+02,1.08450811776e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_702","Catoctin Formation, metarhyolite breccia"]
[8.38586545453e+03,5.65274715803e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_703","Catoctin Formation, metarhyolite"]
[2.26198322113e+03,9.26760920779e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_704","Catoctin Formation, porphyritic metarhyolite"]
[1.01693555720e+03,2.49462681777e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_705","Catoctin Formation, metarhyolite"]
[2.07514079105e+04,3.01088791264e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_706","Catoctin Formation, metarhyolite"]
[1.29083107980e+04,1.77299543544e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_707","Catoctin Formation, metarhyolite"]
[1.65094948454e+04,1.58345356003e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_708","Weverton Formation, Maryland Heights Member"]
[6.81930701699e+03,4.60834945129e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_709","Catoctin Formation, metabasalt"]
[9.42009981263e+03,1.58920228857e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_710","Weverton Formation, Buzzard Knob Member"]
[2.71052925150e+03,3.45791706445e+05,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_711","Catoctin Formation, porphyritic metarhyolite"]
[8.18335081483e+03,8.06703337162e+05,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_712","Catoctin Formation, porphyritic metarhyolite"]
[4.39149801783e+03,1.68293326307e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_713","Catoctin Formation, red metarhyolite"]
[9.20341571631e+02,5.55722208671e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_714","Catoctin Formation, aphanitic metarhyolite"]
[4.10211054414e+03,7.90687896051e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_715","Weverton Formation, Buzzard Knob Member"]
[3.47340079227e+03,2.01337299076e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_716","Loudoun Formation"]
[2.48831159501e+03,2.04051228674e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_717","Catoctin Formation, metarhyolite"]
[2.44974175990e+03,1.97379069432e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_718","Catoctin Formation, metarhyolite"]
[5.08731272755e+03,7.38965522229e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_719","Catoctin Formation, flow banded metarhyolite"]
[9.87539682600e+02,5.44812449105e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_720","Catoctin Formation, porphyritic metarhyolite"]
[2.39994170974e+03,1.00379262874e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_721","Catoctin Formation, flow banded metarhyolite"]
[6.24175754442e+03,1.02258221890e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_722","Weverton Formation, Buzzard Knob Member"]
[5.99291998914e+03,2.81024741509e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_723","Loudoun Formation"]
[5.40920692217e+03,3.46157053444e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_724","Catoctin Formation, flow banded metarhyolite"]
[3.31667186690e+02,8.11910388220e+03,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_725","Catoctin Formation, metarhyolite breccia"]
[1.50772007631e+03,7.67538920007e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_726","Catoctin Formation, aphanitic metarhyolite"]
[6.21249609570e+02,2.14675939970e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_727","Catoctin Formation, porphyritic metarhyolite"]
[8.38285418510e+02,4.02971335829e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_728","Catoctin Formation, aphanitic metarhyolite"]
[6.62511977177e+02,1.34143254660e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_729","Catoctin Formation, metarhyolite breccia"]
[5.26206068186e+02,1.10187420239e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_730","Catoctin Formation, flow banded metarhyolite"]
[1.79330995813e+03,7.74391848485e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_731","Catoctin Formation, metarhyolite"]
[2.18934572573e+03,1.14011471184e+05,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_732","Catoctin Formation, aphanitic metarhyolite"]
[6.13491320702e+02,1.62212062996e+04,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_733","Catoctin Formation, lavender phyllite"]
[3.96554932339e+03,2.28523230533e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_734","Catoctin Formation, red metarhyolite"]
[5.19585346736e+03,6.67648530657e+05,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_735","Weverton Formation, Owens Creek Member"]
[5.39410544531e+02,9.05067905602e+03,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_736","Catoctin Formation, lavender phyllite"]
[8.28745053352e+02,1.99595691268e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_737","Catoctin Formation, flow banded metarhyolite"]
[5.61742900928e+02,1.17999465569e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_738","Catoctin Formation, metarhyolite breccia"]
[7.21617242236e+02,1.67581037238e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_739","Catoctin Formation, aphanitic metarhyolite"]
[5.40285560876e+03,4.11986677572e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_740","Loudoun Formation"]
[3.95024466363e+03,3.79842685825e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_741","Weverton Formation, Buzzard Knob Member"]
[6.29613815757e+02,1.62158353321e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_742","Catoctin Formation, aphanitic metarhyolite"]
[1.77624942089e+03,1.04442234904e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_743","Weverton Formation, Maryland Heights Member"]
[7.48436798338e+02,1.48295350109e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_744","Catoctin Formation, metarhyolite breccia"]
[1.08673463433e+03,3.29229953402e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_745","Catoctin Formation, metarhyolite breccia"]
[1.10741971870e+04,3.74142537506e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_746","Antietam Formation"]
[5.55091151744e+02,1.42296491013e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_747","Catoctin Formation, metarhyolite"]
[3.69463139325e+03,1.77939738134e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_748","Catoctin Formation, metabasalt"]
[1.44808967318e+04,2.83891245979e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_749","Harpers Formation"]
[5.50150008020e+03,2.78097210433e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_750","Catoctin Formation, metabasalt"]
[4.86878034874e+02,1.16696481705e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_751","Catoctin Formation, porphyritic metarhyolite"]
[3.39296435347e+03,1.23403005501e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_752","Catoctin Formation, red metarhyolite"]
[5.09430700804e+02,1.43308518426e+04,"Zcrb","certain","Zcrb",null,"DS1","Dusky blue-gray, metarhyolite breccia with angular to subrounded clasts that weather to a lighter color than the felsic matrix.","MUP_753","Catoctin Formation, metarhyolite breccia"]
[2.22033071707e+03,1.14553170959e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_754","Catoctin Formation, flow banded metarhyolite"]
[9.28888191801e+03,7.77197278324e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_755","Catoctin Formation, red metarhyolite"]
[1.12188588388e+03,2.21563878212e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_756","Catoctin Formation, aphanitic metarhyolite"]
[1.43239624445e+03,6.98221322802e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_757","Catoctin Formation, metarhyolite"]
[4.12659151397e+02,1.05170035464e+04,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_758","Catoctin Formation, flow banded metarhyolite"]
[3.87670700119e+03,2.99408231900e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_759","Catoctin Formation, metarhyolite"]
[1.26086906714e+03,6.32024243954e+04,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_760","Weverton Formation, Owens Creek Member"]
[1.89332343206e+03,5.41768633470e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_761","Catoctin Formation, phyllite unit 1"]
[7.54436982323e+03,6.14787453120e+05,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_762","Catoctin Formation, lavender phyllite"]
[4.96573692481e+03,2.46339440609e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_763","Catoctin Formation, flow banded metarhyolite"]
[1.95185832995e+03,1.40220719835e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_764","Catoctin Formation, red metarhyolite"]
[1.60543961908e+03,4.86492044131e+04,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_765","Catoctin Formation, lavender phyllite"]
[1.35861088964e+03,3.34662789887e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_766","Catoctin Formation, metabasalt"]
[1.46622641735e+03,3.38744800277e+04,"Zcra","certain","Zcra",null,"DS1","Aphanitic, bluish-gray metarhyolite that is massive and dense, and exhibits a conchoidal fracture.","MUP_767","Catoctin Formation, aphanitic metarhyolite"]
[2.59747868886e+03,2.31006744280e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_768","Catoctin Formation, red metarhyolite"]
[1.99955939492e+03,5.51617395963e+04,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_769","Catoctin Formation, red metarhyolite"]
[8.71745002385e+02,1.60385424069e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_770","Catoctin Formation, metarhyolite"]
[3.67633780643e+03,3.33133207536e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_771","Weverton Formation, Maryland Heights Member"]
[2.67905531782e+03,1.22807305927e+05,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_772","Catoctin Formation, lavender phyllite"]
[5.47004029100e+03,8.36339378806e+05,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_773","Catoctin Formation, metarhyolite"]
[2.61782311479e+03,3.80618888768e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_774","Catoctin Formation, red metarhyolite"]
[2.37707702244e+03,1.22111757099e+05,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_775","Catoctin Formation, phyllite unit 1"]
[2.86643585149e+03,4.61788457939e+05,"Zcrr","certain","Zcrr",null,"DS1","Grayish-red to dusky reddish-purple, porphyritic metarhyolite.","MUP_776","Catoctin Formation, red metarhyolite"]
[2.61949632379e+03,1.26294739795e+05,"Zcpl","certain","Zcpl",null,"DS1","Pale purple to grayish red-purple or very light gray phyllite. Locally, color is mottled with red quartz grains and light-gray to yellowish-gray porphyroblasts of feldspar.","MUP_777","Catoctin Formation, lavender phyllite"]
[9.27360801873e+02,3.56482475272e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_778","Catoctin Formation, metarhyolite"]
[1.65750421094e+03,5.61137867014e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_779","Catoctin Formation, metarhyolite"]
[4.82415591052e+03,3.61405973051e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_780","Weverton Formation, Buzzard Knob Member"]
[3.61359998792e+03,4.03812365370e+05,"Zcrf","certain","Zcrf",null,"DS1","Flow-banded, bluish-gray metarhyolite containing nearly planar, locally convoluted flow bands 0.12 to 0.4 inch (3 to 10 mm) thick.","MUP_781","Catoctin Formation, flow banded metarhyolite"]
[1.94159049102e+03,7.97173854299e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_782","Catoctin Formation, porphyritic metarhyolite"]
[1.77014608264e+03,5.33925626038e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_783","Catoctin Formation, metarhyolite"]
[1.29704889605e+03,3.38812512262e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_784","Catoctin Formation, phyllite unit 1"]
[8.91451980145e+02,2.18307826796e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_785","Catoctin Formation, phyllite unit 1"]
[4.92927729155e+02,1.32962145492e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_786","Catoctin Formation, metarhyolite"]
[5.25107640773e+03,1.85052901220e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_787","Loudoun Formation"]
[2.42911355294e+03,2.09753928678e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_788","Weverton Formation, Maryland Heights Member"]
[9.09859039293e+02,2.59098888023e+04,"Zcp1","certain","Zcp1",null,"DS1","Poorly exposed, lustrous, light-gray to medium dark gray, olive-gray phyllite, or mottled yellowish-gray and medium-gray phyllite.","MUP_789","Catoctin Formation, phyllite unit 1"]
[6.62658893008e+02,1.14116399030e+04,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_790","Catoctin Formation, porphyritic metarhyolite"]
[3.22116843060e+03,9.68850019695e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_791","Catoctin Formation, basaltic dike"]
[2.59114493069e+03,5.79348308892e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_792","Catoctin Formation, basaltic dike"]
[1.04950159302e+05,1.29128940362e+07,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_793","Loudoun Formation"]
[4.80695289934e+03,1.05181840295e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_794","Catoctin Formation, basaltic dike"]
[4.62274133830e+04,4.51323963423e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_795","Antietam Formation"]
[3.84883724637e+03,1.06665186776e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_796","Catoctin Formation, basaltic dike"]
[4.50640220477e+03,9.54089440444e+04,"Zcp","certain","Zcp",null,"DS1","Light-to medium-gray phyllite containing highly elongated light-gray flecks and blebs.","MUP_797","Catoctin Formation, phyllite"]
[2.99777065335e+04,2.29592799733e+06,"Ct","certain","_t",null,"DS1","Predominantly buff-weathering, medium- to dark-gray dolomite, dolomitic limestone, and limestone. Divided into 4 members","MUP_798","Tomstown Formation"]
[2.40143938997e+03,2.78175427637e+05,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_799","Basement gneiss complex, leucocratic gneiss"]
[3.87248415517e+04,1.80722601084e+07,"Trl","certain","^rl",null,"DS1","Light-gray to light reddish-gray, very thickly bedded, boulder conglomerate. Clasts are mainly subangular to subrounded limestone and dolostone of Cambrian and Ordovician age, but locally Triassic age siltstone and sandstone are prevalent.","MUP_800","Leesburg Formation"]
[6.09287532864e+03,1.71144877176e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_801","Catoctin Formation, basaltic dike"]
[6.16334572267e+03,1.92587252468e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_802","Catoctin Formation, basaltic dike"]
[4.69383856663e+03,1.26015179141e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_803","Catoctin Formation, basaltic dike"]
[2.62474122458e+03,7.77431985012e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_804","Catoctin Formation, basaltic dike"]
[2.98490725535e+03,7.64539701160e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_805","Catoctin Formation, basaltic dike"]
[2.66593011767e+03,4.58595231866e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_806","Catoctin Formation, basaltic dike"]
[4.24807766296e+03,1.45427650193e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_807","Catoctin Formation, basaltic dike"]
[3.73913672410e+03,8.57279805380e+04,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_808","Catoctin Formation, basaltic dike"]
[3.82230879819e+03,1.08782514795e+05,"Zcb","certain","Zcb",null,"DS1","Dark greenish gray, locally phyllitic, chloritic, basalt.  Commonly has strongly developed cleavage.  These bodies are present in the basement gneiss complex and appear to represent dikes that once contacted the main Catoctin outcrop belt.","MUP_809","Catoctin Formation, basaltic dike"]
[6.63792225848e+03,1.64732725532e+06,"Ygb","certain","Ygb",null,"DS1","Fine- to medium-grained, very light gray to yellowish-gray granitic rock that weathers very pale orange, grayish-pink, and grayish-orange to pale brown.","MUP_810","Basement gneiss complex, biotite gneiss"]
[2.14966372234e+03,3.62725137387e+04,"Zsr","certain","Zsr",null,"DS1","Medium gray brown, silty sandstone with intervals of very light gray, foliated, micaceous marble.","MUP_811","Swift Run Formation"]
[3.95651433074e+04,7.30517508332e+06,"Trb","certain","^b",null,"DS1","Brownish-red to reddish-brown, argillaceous, massive siltstone with thin, fine-grained sandstone interbeds.","MUP_812","Balls Bluff Siltstone"]
[6.68218654032e+03,3.04745839026e+05,"Trmps","certain","^mps",null,"DS1","Medium-grained sandstone beds exhibiting sharp, convex-down bases, shale-pebble lag conglomerates and fining upward character.","MUP_813","Manassas Formation, Poolesville Member, sandstone"]
[9.03651866763e+04,3.23376863681e+07,"Trmp","certain","^mp",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained sandstone and reddish, variegated claystone. Sandstone beds exhibit sharp, convex-down bases, shale-pebble lag conglomerates, and fining-upward character.","MUP_814","Manassas Formation, Poolesville Member"]
[1.88784354245e+04,2.87048224575e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_815","Stonehenge Formation, Funkstown Member"]
[1.43856627914e+04,6.80228822404e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_816","Stonehenge Formation, Stoufferstown Member"]
[6.78723130931e+04,1.13886350816e+07,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_817","Conococheague Formation, Shady Grove Member"]
[4.28932220576e+04,2.65632743930e+06,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_818","Stonehenge Formation, Stoufferstown Member"]
[4.13246146635e+04,6.15276969707e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_819","Stonehenge Formation, Funkstown Member"]
[6.96873712708e+04,7.98169345776e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_820","Stonehenge Formation, Dam Five Member"]
[1.57373028471e+04,1.90604522417e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m). Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_821","Rockdale Run Formation"]
[8.04579972140e+04,1.31836030668e+07,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_822","Stonehenge Formation, Funkstown Member"]
[5.10483992692e+04,2.31951245338e+06,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_823","Stonehenge Formation, Stoufferstown Member"]
[3.82528957242e+04,5.34448798501e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_824","Conococheague Formation, Shady Grove Member"]
[4.49054296668e+04,5.34979968983e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_825","Stonehenge Formation, Dam Five Member"]
[1.02722982022e+04,1.04965977427e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m). Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_826","Rockdale Run Formation"]
[1.79295915167e+04,1.52370215202e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_827","Stonehenge Formation, Funkstown Member"]
[1.74995840503e+04,8.45381554964e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_828","Stonehenge Formation, Stoufferstown Member"]
[2.98163890012e+04,4.19899627405e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_829","Conococheague Formation, Shady Grove Member"]
[6.68919469707e+03,1.17108043292e+06,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_830","Conococheague Formation, Big Spring Station Member"]
[4.78979768444e+03,3.27662242450e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_831","Stonehenge Formation, Stoufferstown Member"]
[1.46598015399e+03,3.94185888618e+04,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_832","Waynesboro Formation, Red Run Member"]
[8.22632463647e+03,4.00719791469e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_833","Stonehenge Formation, Stoufferstown Member"]
[9.39116648356e+03,2.27845538409e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_834","Stonehenge Formation, Funkstown Member"]
[1.36294546129e+03,5.06709732833e+04,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_835","Stonehenge Formation, Stoufferstown Member"]
[2.07002115817e+03,1.81952760844e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_836","Conococheague Formation, Shady Grove Member"]
[2.25854835553e+03,9.70652324366e+04,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_837","Stonehenge Formation, Stoufferstown Member"]
[7.46328093115e+03,6.96794129132e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_838","Conococheague Formation, Shady Grove Member"]
[1.81695009506e+04,9.59872616623e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_839","Waynesboro Formation, Red Run Member"]
[1.52246493615e+03,7.75992217511e+04,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_840","Conococheague Formation, Big Spring Station Member"]
[4.57781422452e+03,3.97298247849e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_841","Waynesboro Formation, Chewsville Member"]
[5.30328617791e+03,2.40547315383e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_842","Stonehenge Formation, Stoufferstown Member"]
[4.37106981039e+03,7.03764164630e+05,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_843","Waynesboro Formation, Cavetown Member"]
[1.52653357099e+03,1.55253596497e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_844","Waynesboro Formation, Chewsville Member"]
[1.62528165327e+03,1.68078536012e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_845","Waynesboro Formation, Chewsville Member"]
[3.07378629392e+03,2.15348742612e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_846","Waynesboro Formation, Red Run Member"]
[1.22139560717e+03,3.98606673091e+04,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_847","Tomstown Formation, Dargan Member"]
[1.56341238988e+03,6.80012475249e+04,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_848","Waynesboro Formation, Chewsville Member"]
[1.55276285307e+03,7.96807185939e+04,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_849","Waynesboro Formation, Cavetown Member"]
[1.11210238050e+03,2.63218395717e+04,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_850","Waynesboro Formation, Red Run Member"]
[1.73881221051e+04,3.11491813199e+06,"Ctd","certain","_td",null,"DS1","Interbedded and cyclical dolomite and limestone. Cycles consist of alternations of dark-gray, bioturbated dolomite and medium- to dark-gray, laminated dolomite, or dark-gray dolomite or limestone and tan, laminated, silty dolomite.","MUP_851","Tomstown Formation, Dargan Member"]
[1.82093735854e+03,6.73466424504e+04,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_852","Waynesboro Formation, Red Run Member"]
[1.93519945332e+03,1.18831152365e+05,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_853","Waynesboro Formation, Cavetown Member"]
[1.99004632303e+03,1.20160905503e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_854","Waynesboro Formation, Chewsville Member"]
[6.58311237647e+03,5.79305113251e+05,"Ctb","certain","_tb",null,"DS1","Light-gray to white, massive to poorly bedded, highly fractured, sugary dolomite.","MUP_855","Tomstown Formation, Benevola Member"]
[1.03592212706e+04,6.26889182273e+05,"Cwar","certain","_war",null,"DS1","Interbedded, tan-weathering, punky, fine-grained sandstones; green-gray shale; gray sandy limestone; and laminated dolostone.","MUP_856","Waynesboro Formation, Red Run Member"]
[1.01955769183e+04,1.55272355061e+06,"Cwak","certain","_wak",null,"DS1","Medium- to thick-bedded, medium- to coarse-grained, intraclastic grainstone; tan, laminated dolostone and dolomitic limestone; and medium-gray, oolitic, lime grainstone, ribbony carbonates, and burrowed-mottled dolomitic limestone.","MUP_857","Waynesboro Formation, Cavetown Member"]
[6.62952387462e+03,6.30616386455e+05,"Cwac","certain","_wac",null,"DS1","Reddish-brown to chocolate-brown, silty shale, siltstone, and silty fine-grained sandstone, interbedded with white, calcareous, Skolithus-burrowed sandstone beds and tan to buff, medium-bedded, sandy dolostone.","MUP_858","Waynesboro Formation, Chewsville Member"]
[6.44554146697e+03,5.09289577752e+05,"Ctf","certain","_tf",null,"DS1","Medium- to dark-gray, thick-bedded, mottled dolomite with white, void-filling, sparry dolomite.","MUP_859","Tomstown Formation, Fort Duncan Member"]
[5.50057592781e+03,1.06278324023e+06,"Ctbh","certain","_tbh",null,"DS1","Three stacked lithologies: basal - tan, vuggy dolomite (rarely exposed); middle - very light gray, sheared laminated dolomitic marble (Keedysville marble bed); upper - gray, ribbony, burrow-mottled lime mudstone","MUP_860","Tomstown Formation, Bolivar Heights Member"]
[7.72215451523e+03,1.49026082537e+06,"Ca","certain","_a",null,"DS1","Three parts: lower - dk green-gray phyllitic shale and siltstone with white Skolithus-borrowed sandstone; middle - white, bioturbated and crossbedded sandstone; upper - gray, crossbedded, vuggy sandstone-conglomerate","MUP_861","Antietam Formation"]
[3.51422290635e+03,9.98730193745e+04,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_862","Harpers Formation, metasandstone"]
[2.62039972850e+03,8.47916684608e+04,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_863","Harpers Formation"]
[1.54381460183e+03,8.19993091436e+04,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_864","Harpers Formation"]
[5.39135406430e+03,1.64753779572e+06,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_865","Martinsburg Formation, lower member"]
[6.38257234443e+03,1.08124893819e+06,"Omu","certain","Omu",null,"DS1","Interbedded medium-gray shale and thin, light-gray to tan, silty sandstone at the base, grading upward into interbedded greenish-gray to medium-gray siltstone and silty shale with medium- to thick-bedded medium- to coarse-grained sandstone","MUP_866","Martinsburg Formation, upper member"]
[8.13762770852e+03,1.44416637893e+06,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_867","Martinsburg Formation, lower member"]
[1.09070983222e+04,1.91931017009e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_868","Rockdale Run Formation"]
[1.19599491944e+04,1.03910286496e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_869","Stonehenge Formation, Dam Five Member"]
[1.03817011224e+04,6.17801054406e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_870","Stonehenge Formation, Funkstown Member"]
[1.03696274219e+04,6.43552223996e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_871","Stonehenge Formation, Stoufferstown Member"]
[3.22585037847e+04,1.25060571938e+07,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_872","Martinsburg Formation, lower member"]
[3.10108126882e+04,3.69604889003e+07,"Omu","certain","Omu",null,"DS1","Interbedded medium-gray shale and thin, light-gray to tan, silty sandstone at the base, grading upward into interbedded greenish-gray to medium-gray siltstone and silty shale with medium- to thick-bedded medium- to coarse-grained sandstone","MUP_873","Martinsburg Formation, upper member"]
[9.51009459533e+03,2.17658484076e+06,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_874","Martinsburg Formation, lower member"]
[4.09718723254e+03,2.19807291227e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_875","Stonehenge Formation, Stoufferstown Member"]
[2.37566725676e+04,2.13254950495e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_876","Stonehenge Formation, Dam Five Member"]
[1.20303999240e+04,9.85832360187e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_877","Stonehenge Formation, Funkstown Member"]
[1.15517065475e+04,9.30433256754e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_878","Stonehenge Formation, Funkstown Member"]
[3.65562047507e+04,3.85228019300e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_879","Stonehenge Formation, Dam Five Member"]
[1.16154024709e+04,7.30377973929e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_880","Stonehenge Formation, Funkstown Member"]
[3.53296617905e+03,5.68099908397e+05,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_881","Rockdale Run Formation"]
[3.29638430370e+03,1.32085347063e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_882","Conococheague Formation, Shady Grove Member"]
[3.55849321200e+03,1.46234699093e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_883","Stonehenge Formation, Stoufferstown Member"]
[2.02875866618e+04,1.98571558708e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_884","Stonehenge Formation, Funkstown Member"]
[1.07350069553e+04,6.33769421188e+05,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_885","Stonehenge Formation, Dam Five Member"]
[7.60175543825e+03,3.64343690701e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_886","Stonehenge Formation, Stoufferstown Member"]
[1.64050190677e+03,5.54348691505e+04,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_887","Stonehenge Formation, Stoufferstown Member"]
[6.24269257745e+03,2.01608141722e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_888","Stonehenge Formation, Stoufferstown Member"]
[1.50233471856e+04,1.33266995830e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_889","Conococheague Formation, Shady Grove Member"]
[1.20833006607e+04,4.46458109383e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_890","Stonehenge Formation, Stoufferstown Member"]
[9.96554599946e+04,8.24507963690e+07,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_891","Rockdale Run Formation"]
[1.17315032585e+04,1.22024534751e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_892","Conococheague Formation, Shady Grove Member"]
[7.95429979994e+03,3.40653859378e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_893","Stonehenge Formation, Stoufferstown Member"]
[2.36767421166e+03,1.12762644714e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_894","Stonehenge Formation, Stoufferstown Member"]
[3.22565779300e+03,2.63404190361e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_895","Conococheague Formation, Shady Grove Member"]
[2.67816402368e+03,1.08215148025e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_896","Stonehenge Formation, Stoufferstown Member"]
[8.97491968226e+03,4.65937766010e+05,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_897","Conococheague Formation, Zullinger Member"]
[1.11282580546e+04,1.03616605793e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_898","Conococheague Formation, Shady Grove Member"]
[2.70797325156e+04,1.99409694001e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_899","Stonehenge Formation, Funkstown Member"]
[2.74108506694e+04,2.93446615851e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_900","Stonehenge Formation, Dam Five Member"]
[1.12289023460e+04,3.62257136298e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_901","Stonehenge Formation, Stoufferstown Member"]
[1.36022210310e+04,4.18506963661e+06,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_902","Conococheague Formation, Zullinger Member"]
[3.11654152021e+03,2.58538861550e+05,"Ccb","certain","_cb",null,"DS1","Tan, massive dolomite interbedded with tan to light-gray, laminated dolomite; unit characterized by dark-brown weathering.","MUP_903","Conococheague Formation, Big Spring Station Member"]
[8.99936233866e+03,1.16893122842e+06,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_904","Stonehenge Formation, Funkstown Member"]
[4.03497788918e+03,1.73142300252e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_905","Stonehenge Formation, Stoufferstown Member"]
[2.30264488543e+03,9.88716765116e+04,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_906","Stonehenge Formation, Stoufferstown Member"]
[8.08741632659e+03,1.10940967184e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_907","Conococheague Formation, Shady Grove Member"]
[8.33843772344e+03,1.13478414927e+06,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_908","Chambersberg Formation"]
[2.94379235438e+03,1.76689256780e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_909","Chambersberg Formation"]
[2.69743405904e+03,8.84792094664e+04,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_910","St. Paul Group (undivided)"]
[2.70881738728e+03,1.21180629704e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_911","Chambersberg Formation"]
[2.76457691483e+03,4.00274967268e+05,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_912","Martinsburg Formation, lower member"]
[2.28287115868e+03,8.45903528385e+04,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_913","Ijamsville Phyllite, conglomeratic metagraywacke"]
[1.60743563438e+04,3.62965353880e+06,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_914","Frederick Formation, Rocky Springs Station Member"]
[1.65129143689e+03,3.94414907773e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_915","Sams Creek Formation, quartzite"]
[7.51811824728e+03,9.64739535153e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_916","Ijamsville Phyllite, conglomeratic metagraywacke"]
[2.62508202932e+03,1.44575449098e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_917","Ijamsville Phyllite, conglomeratic metagraywacke"]
[2.76751268797e+03,1.24173839012e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_918","Ijamsville Phyllite, conglomeratic metagraywacke"]
[8.01572448489e+03,9.79489121080e+05,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_919","Frederick Formation, Monocacy Member"]
[5.33991465469e+03,1.51272665609e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_920","Sams Creek Formation, marble"]
[1.89297201034e+03,6.95194492490e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_921","Sams Creek Formation, quartzite"]
[6.54507012928e+02,1.56636487415e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_922","Sams Creek Muscovite Phyllite"]
[1.18198046144e+03,2.49494451998e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_923","Sams Creek Formation, quartzite"]
[4.22640215294e+03,2.04664682465e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_924","Ijamsville Phyllite, conglomeratic metagraywacke"]
[6.91369275217e+02,6.57282428434e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_925","Sams Creek Formation, metabasalt"]
[4.40445055407e+02,5.93668873931e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_926","Sams Creek Formation, quartzite"]
[7.28045246862e+02,3.12418395322e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_927","Sams Creek Formation, quartzite"]
[4.75554787397e+03,3.09104373370e+05,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_928","Ijamsville Phyllite, conglomeratic metagraywacke"]
[1.07339601285e+03,2.28459714952e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_929","Sams Creek Formation, quartzite"]
[3.90710911408e+03,1.47082134271e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_930","Sams Creek Formation, quartzite"]
[1.51780928910e+03,6.96280387457e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_931","Sams Creek Formation, metabasalt"]
[8.92182255604e+02,1.24041200230e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_932","Sams Creek Formation, quartzite"]
[9.21862108228e+03,2.15179062332e+05,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_933","Frederick Formation, Monocacy Member, shale bed"]
[8.97152019938e+03,1.15536225522e+06,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_934","Sams Creek Muscovite Phyllite"]
[9.16600982286e+03,8.72648789297e+05,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_935","Frederick Formation, Monocacy Member"]
[7.55122610920e+02,1.42946751210e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_936","Sams Creek Formation, quartzite"]
[1.32668757749e+03,2.38753408833e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_937","Sams Creek Formation, metabasalt"]
[4.60050799800e+02,3.63193837271e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_938","Sams Creek Formation, metabasalt"]
[4.12213789875e+02,3.91836183386e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_939","Sams Creek Formation, metabasalt"]
[5.83226297264e+02,9.25513529542e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_940","Sams Creek Formation, quartzite"]
[6.14870839617e+02,1.04331421689e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_941","Sams Creek Formation, quartzite"]
[5.28273759468e+03,8.61567883109e+05,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_942","Grove Formation, Ceresville Member"]
[8.96721412078e+02,1.34060533104e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_943","Sams Creek Formation, metabasalt"]
[4.35463539848e+02,5.70443099328e+03,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_944","Sams Creek Formation, hematite phyllite"]
[3.45251624722e+02,2.95960102143e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_945","Sams Creek Formation, quartzite"]
[5.17429849317e+02,1.37516599391e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_946","Sams Creek Formation, marble"]
[4.37660154924e+02,4.07927045439e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_947","Sams Creek Formation, quartzite"]
[1.88664490836e+03,6.20101881971e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_948","Sams Creek Formation, metabasalt"]
[7.43824413149e+02,1.23511411576e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_949","Sams Creek Formation, marble"]
[5.40411166803e+02,8.24754547772e+03,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_950","Sams Creek Formation, hematite phyllite"]
[1.39338506904e+03,2.67507233569e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_951","Sams Creek Formation, quartzite"]
[7.58952581933e+02,1.79957252509e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_952","Sams Creek Formation, quartzite"]
[1.35593568857e+03,2.29238969792e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_953","Sams Creek Formation, quartzite"]
[6.84691115602e+02,1.25143593320e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_954","Sams Creek Formation, metabasalt"]
[4.83578637458e+03,1.13838639905e+05,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_955","Frederick Formation, Monocacy Member, shale bed"]
[6.91584485331e+02,1.59348531241e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_956","Sams Creek Muscovite Phyllite"]
[9.55985969516e+04,5.83591184307e+06,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_957","Frederick Formation, Monocacy Member"]
[8.07288399852e+02,1.00157423339e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_958","Sams Creek Formation, quartzite"]
[1.31777049946e+03,2.71572916798e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_959","Sams Creek Formation, quartzite"]
[5.01839477593e+02,5.08207727560e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_960","Sams Creek Formation, tuffaceous phyllite"]
[1.18112308812e+03,3.68479562792e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_961","Sams Creek Muscovite Phyllite"]
[5.34198908403e+02,5.88567737316e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_962","Sams Creek Formation, tuffaceous phyllite"]
[1.87621857482e+04,4.05938937664e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_963","Jurassic Dikes"]
[8.32672846460e+02,1.43774247483e+04,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_964","Grove Formation, Ceresville Member"]
[1.17403600740e+04,2.52052685553e+06,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_965","Grove Formation, Ceresville Member"]
[1.26431279854e+03,4.54035740043e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_966","Sams Creek Muscovite Phyllite"]
[6.95422152415e+04,1.44546134833e+07,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_967","Frederick Formation, Lime Kiln Member"]
[4.38352126748e+02,5.85681775973e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_968","Sams Creek Formation, quartzite"]
[2.60069155517e+03,3.07589309603e+05,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_969","Frederick Formation, Adamstown Member"]
[8.50085017383e+02,1.35905599871e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_970","Sams Creek Formation, tuffaceous phyllite"]
[7.74515481394e+03,7.48144747389e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_971","Sams Creek Muscovite Phyllite"]
[1.63326917593e+05,5.29837477567e+07,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_972","Frederick Formation, Rocky Springs Station Member"]
[1.33871935336e+03,3.79651263915e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_973","Sams Creek Formation, quartzite"]
[5.77656179748e+02,5.64506597793e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_974","Sams Creek Formation, tuffaceous phyllite"]
[4.62256796781e+02,3.22726185505e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_975","Sams Creek Formation, tuffaceous phyllite"]
[5.50265152356e+02,6.55614192902e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_976","Sams Creek Formation, tuffaceous phyllite"]
[2.17693766004e+02,2.35232653382e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_977","Sams Creek Formation, marble"]
[1.63212780480e+03,7.96270093207e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_978","Sams Creek Formation, marble"]
[3.19681189939e+04,7.79271143139e+06,"Car","certain","_ar",null,"DS1","Thickly bedded, greenish-black to grayish-black, very fine-grained to fine-grained, burrow-mottled silty sandstone, interbedded with medium-gray to grayish-black, phyllitic shales 1 to 3 m thick.","MUP_979","Araby Formation"]
[6.03039762629e+04,1.53249097618e+06,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_980","Frederick Formation, Monocacy Member, shale bed"]
[1.94138134231e+04,1.56527568150e+06,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_981","Frederick Formation, Monocacy Member"]
[5.41846531926e+02,9.08663891105e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_982","Sams Creek Formation, marble"]
[6.41698324011e+02,1.22464282805e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_983","Sams Creek Formation, quartzite"]
[3.21997871229e+03,2.30886830717e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_984","Sams Creek Formation, marble"]
[4.46627258044e+02,5.12248350314e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_985","Sams Creek Formation, tuffaceous phyllite"]
[1.55587654892e+03,2.27444197654e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_986","Jurassic Dikes"]
[7.97506458052e+04,2.20958927752e+07,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_987","Frederick Formation, Adamstown Member"]
[8.08778957446e+02,3.12711475553e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_988","Sams Creek Formation, quartzite"]
[4.56932833586e+03,4.39785237332e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_989","Sams Creek Formation, quartzite"]
[4.55463529537e+02,6.77297588747e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_990","Sams Creek Formation, marble"]
[1.32402005861e+03,1.19490865648e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_991","Sams Creek Formation, metabasalt"]
[5.70555543070e+02,1.08254364229e+04,"CZim","certain","_Zim",null,"DS1","Light olive-gray, sandy limestone and dusky red, calcareous quartzite occurs within phyllite locally.","MUP_992","Ijamsville Phyllite, marble"]
[1.58548103351e+03,1.81510675271e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_993","Sams Creek Formation, metabasalt"]
[7.94545871838e+03,4.18184372476e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_994","Sams Creek Formation, marble"]
[4.84565708990e+03,2.30844972241e+05,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_995","Frederick Formation, Rocky Springs Station Member"]
[1.29307937818e+03,2.75144764050e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_996","Sams Creek Formation, quartzite"]
[2.28457124237e+03,5.90683307746e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_997","Sams Creek Formation, quartzite"]
[3.28652733155e+03,4.39102420594e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_998","Jurassic Dikes"]
[6.11617787267e+02,1.06171565840e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_999","Sams Creek Formation, marble"]
[8.57168761603e+02,1.09292498430e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1000","Sams Creek Formation, quartzite"]
[1.25509962123e+03,2.54904002517e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1001","Sams Creek Formation, tuffaceous phyllite"]
[7.91121524837e+02,1.57688321094e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1002","Sams Creek Formation, quartzite"]
[2.10858579569e+04,1.64306167649e+06,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1003","Sams Creek Formation, tuffaceous phyllite"]
[9.24865417497e+02,2.14151771922e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1004","Sams Creek Formation, quartzite"]
[7.81160572453e+02,1.51079754608e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1005","Sams Creek Formation, quartzite"]
[2.56474163613e+03,8.22459478745e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1006","Sams Creek Formation, marble"]
[7.13555682434e+03,6.46889955539e+05,"Car","certain","_ar",null,"DS1","Thickly bedded, greenish-black to grayish-black, very fine-grained to fine-grained, burrow-mottled silty sandstone, interbedded with medium-gray to grayish-black, phyllitic shales 1 to 3 m thick.","MUP_1007","Araby Formation"]
[2.30927667800e+03,3.31023631171e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1008","Jurassic Dikes"]
[2.24859158499e+03,3.24687686338e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1009","Jurassic Dikes"]
[8.51772198884e+02,1.69964596677e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1010","Sams Creek Formation, quartzite"]
[4.24455116053e+03,2.29827465800e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1011","Sams Creek Formation, quartzite"]
[8.71853468148e+03,3.65957402174e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1012","Sams Creek Formation, marble"]
[1.55723157316e+03,3.18927937015e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1013","Jurassic Dikes"]
[4.99436068962e+03,9.87392519588e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1014","Jurassic Dikes"]
[4.52382658940e+03,3.13138344996e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1015","Sams Creek Muscovite Phyllite"]
[1.33166247392e+03,3.05757244089e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1016","Jurassic Dikes"]
[4.26208246726e+02,1.04596429541e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1017","Sams Creek Muscovite Phyllite"]
[4.76103086260e+03,1.69692362739e+05,"CZscs","certain","_Zscs",null,"DS1","Metasiltstone, phyllite, quartzite, and metagraywacke, undifferentiated. Light-brown metasiltstone interbedded with quartzite and calcareous metasandstone. Bedding can be recognized except where transposed in shear zones adjacent to faults.","MUP_1018","Sams Creek Formation, metasiltstone"]
[7.90936759420e+02,8.85050469449e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1019","Sams Creek Formation, metabasalt"]
[5.82844979831e+04,5.05135525772e+06,"CZscs","certain","_Zscs",null,"DS1","Metasiltstone, phyllite, quartzite, and metagraywacke, undifferentiated. Light-brown metasiltstone interbedded with quartzite and calcareous metasandstone. Bedding can be recognized except where transposed in shear zones adjacent to faults.","MUP_1020","Sams Creek Formation, metasiltstone"]
[5.13433102447e+02,8.54343551569e+03,"CZim","certain","_Zim",null,"DS1","Light olive-gray, sandy limestone and dusky red, calcareous quartzite occurs within phyllite locally.","MUP_1021","Ijamsville Phyllite, marble"]
[5.93685093006e+02,1.13985165793e+04,"CZscs","certain","_Zscs",null,"DS1","Metasiltstone, phyllite, quartzite, and metagraywacke, undifferentiated. Light-brown metasiltstone interbedded with quartzite and calcareous metasandstone. Bedding can be recognized except where transposed in shear zones adjacent to faults.","MUP_1022","Sams Creek Formation, metasiltstone"]
[4.83808944941e+02,7.67926068478e+03,"CZscs","certain","_Zscs",null,"DS1","Metasiltstone, phyllite, quartzite, and metagraywacke, undifferentiated. Light-brown metasiltstone interbedded with quartzite and calcareous metasandstone. Bedding can be recognized except where transposed in shear zones adjacent to faults.","MUP_1023","Sams Creek Formation, metasiltstone"]
[3.67963984490e+02,5.70694686451e+03,"CZim","certain","_Zim",null,"DS1","Light olive-gray, sandy limestone and dusky red, calcareous quartzite occurs within phyllite locally.","MUP_1024","Ijamsville Phyllite, marble"]
[1.05009534403e+03,2.05986068635e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1025","Sams Creek Formation, quartzite"]
[1.11251921818e+03,1.61621066702e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1026","Sams Creek Formation, metabasalt"]
[1.13183207951e+03,1.56460869256e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1027","Sams Creek Formation, metabasalt"]
[1.18890699725e+03,1.84729430630e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1028","Sams Creek Formation, metabasalt"]
[1.29179592913e+03,3.14798019567e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1029","Jurassic Dikes"]
[1.03955638469e+03,2.25076004357e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1030","Sams Creek Formation, quartzite"]
[1.12930861512e+03,2.36347723406e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1031","Sams Creek Formation, quartzite"]
[2.22274140850e+02,3.24471123194e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1032","Sams Creek Formation, marble"]
[2.35418369020e+03,4.75771855864e+04,"CZiq","certain","_Zip",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1033","Ijamsville Phyllite, quartzite"]
[9.47921634584e+02,1.73733609691e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1034","Sams Creek Formation, quartzite"]
[1.39861837036e+04,9.41349244477e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1035","Urbana Formation, quartzite"]
[3.72667569284e+03,1.33403520796e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1036","Sams Creek Formation, quartzite"]
[1.70711228401e+03,5.27794759525e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1037","Sams Creek Formation, metabasalt"]
[1.70826310328e+03,2.74207044511e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1038","Sams Creek Formation, quartzite"]
[2.87615108543e+03,3.92085918278e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1039","Sams Creek Formation, quartzite"]
[1.44974192923e+03,4.19609165203e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1040","Sams Creek Formation, metabasalt"]
[2.30959383340e+03,6.32643910566e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1041","Sams Creek Formation, quartzite"]
[1.83585669136e+03,4.99447386041e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1042","Sams Creek Formation, metabasalt"]
[2.48853126542e+03,3.70648210628e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1043","Sams Creek Formation, metabasalt"]
[8.03581146283e+02,7.67745587532e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1044","Sams Creek Formation, quartzite"]
[6.36715198604e+02,7.49525194363e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1045","Sams Creek Formation, quartzite"]
[1.26577080509e+04,1.07038452361e+06,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1046","Sams Creek Formation, marble"]
[1.13320594569e+03,2.19492455547e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1047","Sams Creek Formation, quartzite"]
[9.21441776128e+02,1.06727928990e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1048","Sams Creek Formation, metabasalt"]
[1.66215061591e+03,3.10868228674e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1049","Sams Creek Formation, metabasalt"]
[1.16556312323e+03,1.71946694532e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1050","Sams Creek Formation, quartzite"]
[2.41399280411e+03,3.65483796647e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1051","Sams Creek Formation, quartzite"]
[1.43106167200e+03,2.06511734100e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1052","Sams Creek Formation, metabasalt"]
[1.37530709963e+03,1.74456958689e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1053","Sams Creek Formation, metabasalt"]
[1.65057416079e+04,5.96841440390e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1054","Urbana Formation, quartzite"]
[2.84926550128e+03,1.60581086731e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1056","Urbana Formation, quartzite"]
[3.05373679843e+03,4.81095678191e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1057","Sams Creek Formation, quartzite"]
[3.10126210082e+03,5.28309371844e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1058","Jurassic Dikes"]
[6.69410913319e+03,3.96431834067e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1059","Urbana Formation, quartzite"]
[6.16036445110e+04,1.44025616481e+07,"CZi","certain","_Zi",null,"DS1","Dusky blue, grayish-blue, very dusky red-purple, greenish-gray to pale olive phyllite, phyllonite, and minor slate. Phyllite contains mostly muscovite and chlorite. Lustrous sheen from mica and dark color results from abundant hematite dust.","MUP_1060","Ijamsville Phyllite"]
[2.97971892112e+03,1.50208000462e+05,"Cu","certain","_u",null,"DS1","Predominately moderate olive-brown to light olive-gray, calcareous metagraywacke and metasiltstone.","MUP_1061","Urbana Formation"]
[1.53942526236e+03,3.41784077517e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1062","Urbana Formation, quartzite"]
[2.16653405903e+03,1.35629970204e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1063","Sams Creek Formation, metabasalt"]
[3.97075739107e+02,5.11633171564e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1064","Sams Creek Formation, quartzite"]
[1.39349330977e+03,3.70224869290e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1065","Sams Creek Formation, metabasalt"]
[9.19464141929e+02,1.61585268855e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1066","Sams Creek Formation, quartzite"]
[1.03835502868e+03,2.06538083304e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1067","Sams Creek Formation, quartzite"]
[9.52610717633e+02,1.42042067455e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1068","Sams Creek Formation, metabasalt"]
[7.23853901544e+02,1.67514838370e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1069","Sams Creek Formation, marble"]
[3.72161410256e+02,4.99897414684e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1070","Sams Creek Formation, metabasalt"]
[1.08057532583e+03,3.12028813533e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1071","Sams Creek Formation, metabasalt"]
[3.49346221156e+04,2.87244316737e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1072","Sams Creek Formation, metabasalt"]
[7.16446276259e+04,1.26428779398e+07,"CZscqp","certain","_Zscqp",null,"DS1","Light-tan to light grayish-green to light silvery gray muscovite phyllite quartzite.","MUP_1073","Sams Creek Formation, quartzite within phyllite"]
[4.42757300915e+02,4.62252494496e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1074","Sams Creek Formation, metabasalt"]
[8.70359420803e+02,1.39316381402e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1075","Sams Creek Formation, tuffaceous phyllite"]
[2.91331874188e+03,6.50149689586e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1076","Sams Creek Formation, tuffaceous phyllite"]
[2.08579404366e+03,3.55107502331e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1077","Sams Creek Formation, tuffaceous phyllite"]
[5.56756657785e+02,8.52150898761e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1078","Sams Creek Formation, metabasalt"]
[7.29707098867e+02,1.44899223053e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1079","Sams Creek Formation, tuffaceous phyllite"]
[1.99731360313e+05,5.49668013802e+07,"Cu","certain","_u",null,"DS1","Predominately moderate olive-brown to light olive-gray, calcareous metagraywacke and metasiltstone.","MUP_1080","Urbana Formation"]
[9.41691826132e+03,1.81974730835e+06,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1081","Frederick Formation, Rocky Springs Station Member"]
[2.82644130128e+03,4.40484015853e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1082","Frederick Formation, Rocky Springs Station breccia"]
[1.53791952556e+03,2.33228442445e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1083","Frederick Formation, Rocky Springs Station breccia"]
[9.68650921423e+02,5.75458901930e+04,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1084","Weverton Formation, Buzzard Knob Member"]
[1.69397503666e+03,3.18116736044e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1085","Frederick Formation, Rocky Springs Station breccia"]
[2.83969422843e+03,5.29174359412e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1086","Frederick Formation, Rocky Springs Station breccia"]
[1.23257002303e+03,5.88635827184e+04,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1087","Weverton Formation, Buzzard Knob Member"]
[2.59608175665e+03,5.84107050592e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1088","Frederick Formation, Rocky Springs Station breccia"]
[1.69037211757e+03,2.36388795047e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1089","Frederick Formation, Rocky Springs Station breccia"]
[1.47924293865e+03,3.03915630188e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1090","Frederick Formation, Rocky Springs Station breccia"]
[3.51861289777e+02,9.13447681045e+03,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1091","New Oxford Formation"]
[2.35858190422e+03,4.86404128048e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1092","Frederick Formation, Rocky Springs Station breccia"]
[4.73822117193e+02,8.21322923212e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1093","Frederick Formation, Rocky Springs Station breccia"]
[3.39971494742e+03,8.46481511021e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1094","Frederick Formation, Rocky Springs Station breccia"]
[4.16041567443e+02,1.10137687559e+04,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1095","New Oxford Formation"]
[9.29356972418e+02,3.55589883638e+04,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1096","Weverton Formation, Buzzard Knob Member"]
[2.16426223017e+03,4.94132644698e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1097","Frederick Formation, Rocky Springs Station breccia"]
[5.54644070565e+02,8.20775297168e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1098","Frederick Formation, Rocky Springs Station breccia"]
[6.26504444864e+02,2.16534439206e+04,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1099","New Oxford Formation"]
[1.16333828442e+03,2.15344503437e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1100","Frederick Formation, Rocky Springs Station breccia"]
[5.89307804656e+02,1.42515498127e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1101","Frederick Formation, Rocky Springs Station breccia"]
[3.34054103371e+02,4.46562448133e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1102","Frederick Formation, Rocky Springs Station breccia"]
[1.28770262993e+03,3.51214407619e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1103","Frederick Formation, Rocky Springs Station breccia"]
[5.46316151823e+02,8.52691223570e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1104","Frederick Formation, Rocky Springs Station breccia"]
[1.51213761870e+03,3.37106611976e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1105","Frederick Formation, Rocky Springs Station breccia"]
[2.49697199307e+03,4.17013188378e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1106","Frederick Formation, Rocky Springs Station breccia"]
[2.34644032343e+03,4.11890868886e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1107","Frederick Formation, Rocky Springs Station breccia"]
[3.33464869696e+03,9.34868375483e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1108","Frederick Formation, Rocky Springs Station breccia"]
[2.07834323065e+03,3.50126776641e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1109","Frederick Formation, Rocky Springs Station breccia"]
[1.15265751066e+03,6.32176722569e+04,"Cfa","certain","_fa",null,"DS1","Thinly interbedded, medium dark gray to dark-gray, argillaceous, fine-grained limestone and dusky yellow to medium dark gray, silty dolomite.","MUP_1110","Frederick Formation, Adamstown Member"]
[3.01163258575e+03,6.12808916058e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1111","Frederick Formation, Rocky Springs Station breccia"]
[2.58497183398e+03,3.37813830549e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1112","Frederick Formation, Rocky Springs Station breccia"]
[4.29160323173e+03,6.62191796061e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1113","Frederick Formation, Rocky Springs Station breccia"]
[1.52690848761e+03,7.55891479503e+04,"Cfl","certain","_fl",null,"DS1","Interbedded, thinly laminated to thinly bedded, dark-gray, fine-grained limestone, calcareous shale, and medium-bedded fine-grained limestone, and thickly interbedded with medium dark gray, fine-grained limestone with wavy bedding and stromatolitic beds.","MUP_1114","Frederick Formation, Lime Kiln Member"]
[2.40224134836e+03,3.89075590995e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1115","Frederick Formation, Rocky Springs Station breccia"]
[3.93557923295e+03,4.50749265706e+05,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_1116","Weverton Formation, Owens Creek Member"]
[7.02314897119e+03,1.80235497774e+05,"Ct","certain","_t",null,"DS1","Predominantly buff-weathering, medium- to dark-gray dolomite, dolomitic limestone, and limestone. Divided into 4 members","MUP_1117","Tomstown Formation"]
[1.36310112204e+03,9.58707998074e+04,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1118","New Oxford Formation"]
[4.59576093946e+03,1.46733687782e+05,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1119","Frederick Formation, Rocky Springs Station breccia"]
[3.52248373709e+03,9.70045489036e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1120","Frederick Formation, Rocky Springs Station breccia"]
[2.91605326047e+03,7.18302176516e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1121","Frederick Formation, Rocky Springs Station breccia"]
[3.31842568068e+03,1.57691245413e+05,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1122","Frederick Formation, Rocky Springs Station breccia"]
[3.45911246681e+03,3.30360356780e+05,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1123","Frederick Formation, Rocky Springs Station Member"]
[2.74711442907e+03,1.39670763751e+05,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1124","Frederick Formation, Rocky Springs Station breccia"]
[2.96483406370e+03,3.76408643603e+05,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1125","Frederick Formation, Rocky Springs Station Member"]
[2.85464998671e+03,2.02196601686e+05,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_1126","Grove Formation, Fountain Rock Member"]
[2.25618454514e+03,5.78407173601e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1127","Frederick Formation, Rocky Springs Station breccia"]
[4.85559199604e+03,1.57518271208e+05,"Trmps","certain","^mps",null,"DS1","Medium-grained sandstone beds exhibiting sharp, convex-down bases, shale-pebble lag conglomerates and fining upward character.","MUP_1128","Manassas Formation, Poolesville Member, sandstone"]
[1.83607341399e+03,2.66567515382e+04,"Ct","certain","_t",null,"DS1","Predominantly buff-weathering, medium- to dark-gray dolomite, dolomitic limestone, and limestone. Divided into 4 members","MUP_1129","Tomstown Formation"]
[4.66067760199e+04,3.76061532762e+06,"Ogc","certain","Ogc",null,"DS1","Medium light gray to medium-gray, thick-bedded and cross-bedded, arenaceous limestone and sandy, dolomitic limestone with thin interbeds (1 ft or 0.3 m) of medium light gray, sandy, thrombolitic dolomite.","MUP_1130","Grove Formation, Ceresville Member"]
[2.66516468497e+03,7.21745386355e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1131","Frederick Formation, Rocky Springs Station breccia"]
[2.17515087741e+04,6.59072340560e+06,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_1132","Grove Formation, Fountain Rock Member"]
[5.68499899121e+03,2.20014412414e+05,"Trmps","certain","^mps",null,"DS1","Medium-grained sandstone beds exhibiting sharp, convex-down bases, shale-pebble lag conglomerates and fining upward character.","MUP_1133","Manassas Formation, Poolesville Member, sandstone"]
[1.29985111298e+04,3.43506915009e+05,"Trmt","certain","^mt",null,"DS1","Light-gray to light reddish-gray, subangular to subrounded, limestone and dolomite conglomerate. Clasts are predominately tan dolostone, but locally reddish-siltstone, sandstone, and some limestone clasts are prevalent.","MUP_1134","Manassas Formation, Tuscarora Creek Member"]
[4.16007753762e+03,1.21785735303e+05,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1135","Frederick Formation, Rocky Springs Station breccia"]
[1.63251759671e+04,4.06360361263e+05,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_1136","Frederick Formation, Monocacy Member, shale bed"]
[7.46797081944e+03,8.39187473839e+05,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1137","Frederick Formation, Rocky Springs Station Member"]
[5.01253300448e+02,1.01056312928e+04,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_1138","Wakefield Marble"]
[3.69261524778e+03,2.30261293635e+05,"Osf","certain","Osf",null,"DS1","The lower part of the member is composed of massive, medium gray, algal lime boundstone.  Grading upsection into interbedded medium to dark gray algal thrombolites and medium gray, lime wackestone to lime packstone.","MUP_1139","Stonehenge Formation, Funkstown Member"]
[8.95830169278e+03,8.81283058771e+05,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_1140","Rockdale Run Formation"]
[1.67109182127e+04,3.48928621017e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_1141","Rockdale Run Formation"]
[9.62808813609e+03,1.37602915211e+06,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_1142","Conococheague Formation, Shady Grove Member"]
[9.43493334396e+03,4.20751217064e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_1143","Stonehenge Formation, Stoufferstown Member"]
[4.84556875267e+03,6.05688989532e+05,"Ccsg","certain","_csg",null,"DS1","Interbedded, medium- to light-gray, ribbony lime mudstone that weathers to flaggy to platy beds, and arenaceous grainstones exhibiting edgewise and flat-pebble conglomerates. Locally, thin pastel blue and pink marble strata are developed.","MUP_1144","Conococheague Formation, Shady Grove Member"]
[1.00112905417e+04,5.28947534653e+05,"Oss","certain","Oss",null,"DS1","Dark-gray, argillaceous, thinly bedded to ribbony, lime mudstone with thin beds of flat-pebble lime grainstone conglomerate and hummocky, discontinuous, laminated limestone.","MUP_1145","Stonehenge Formation, Stoufferstown Member"]
[1.69997852654e+04,4.25415904446e+06,"Ccz","certain","_cz",null,"DS1","Predominantly cyclically bedded, medium- to dark-gray, thrombolitic limestone and gray, ribbony and laminated limestone and tan, laminated dolomite.","MUP_1146","Conococheague Formation, Zullinger Member"]
[1.65998019091e+04,2.51697731457e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_1147","Rockdale Run Formation"]
[3.42755576614e+04,4.35591574857e+06,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_1148","Stonehenge Formation, Dam Five Member"]
[1.15580962858e+04,2.15917768065e+06,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1149","St. Paul Group (undivided)"]
[1.03749697415e+03,3.15752596360e+04,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1150","Chambersberg Formation"]
[4.40823909287e+03,5.18840690497e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1151","St. Paul Group (undivided)"]
[9.76695108528e+02,2.68743277690e+04,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1152","Pinesburg Station Dolomite"]
[2.96891253786e+03,5.75692826611e+04,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1153","Pinesburg Station Dolomite"]
[6.61053382031e+03,4.82920706849e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1154","Pinesburg Station Dolomite"]
[8.05349988373e+02,9.69419270483e+03,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1155","Chambersberg Formation"]
[9.98374052519e+03,1.37539306666e+06,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1156","Chambersberg Formation"]
[3.36940941717e+03,1.03546276738e+05,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_1157","Martinsburg Formation, lower member"]
[5.60726364767e+03,2.93068435348e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1158","Chambersberg Formation"]
[3.37513038406e+03,3.93499089836e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1159","Pinesburg Station Dolomite"]
[2.83506836249e+03,1.72392658326e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1160","St. Paul Group (undivided)"]
[2.70227033722e+03,1.84530600426e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1161","Chambersberg Formation"]
[1.43981135908e+03,4.83607498226e+04,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1162","St. Paul Group (undivided)"]
[3.19744276997e+03,1.96167743581e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1163","Chambersberg Formation"]
[1.03441475617e+03,3.13865244612e+04,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_1164","Martinsburg Formation, lower member"]
[1.96117791205e+03,1.69420664497e+05,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_1165","Rockdale Run Formation"]
[5.78210615126e+03,5.07068952546e+05,"Osdf","certain","Osdf",null,"DS1","Medium to medium dark gray, medium-bedded, ribbony and oolitic lime mudstone to packstone.  Near the base of the member ribbony lime mudstone predominate. This member commonly forms a persistent and mappable ridge and is frequently well-exposed.","MUP_1166","Stonehenge Formation, Dam Five Member"]
[2.52755553757e+03,1.98689210930e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1167","Pinesburg Station Dolomite"]
[3.73574329468e+03,4.23813449049e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1168","St. Paul Group (undivided)"]
[2.87430951812e+03,1.70131777424e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1169","Pinesburg Station Dolomite"]
[3.97048045435e+03,2.79121570386e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1170","Chambersberg Formation"]
[8.16878836957e+03,1.24434408686e+06,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_1171","Martinsburg Formation, lower member"]
[1.17483984212e+04,1.41289703051e+06,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1172","Chambersberg Formation"]
[1.37709624727e+04,1.51120210322e+06,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1173","St. Paul Group (undivided)"]
[1.25527337425e+04,1.32737839728e+06,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1174","Pinesburg Station Dolomite"]
[1.17330479844e+04,1.36284303499e+06,"Oml","certain","Oml",null,"DS1","Predominately medium to dark gray, fissile shale with thin (<0.5 inches, 1 cm) siltstone interbeds.  Dark gray to black shale at base equivalent to the Utica Shale.","MUP_1175","Martinsburg Formation, lower member"]
[1.35179686895e+04,2.09652789861e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1176","Sams Creek Formation, metabasalt"]
[7.67524233796e+03,7.34804042227e+05,"CZwm","certain","_Zwm",null,"DS1","Predominately white to gray, massive to banded or bedded crystalline marble, but also contains dark-gray, bluish-gray, pale green, and purple marble and interbeds of green and purple phyllite.","MUP_1177","Wakefield Marble"]
[1.12788414322e+03,4.26181442234e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1179","Sams Creek Formation, metabasalt"]
[2.32168551533e+03,2.48470734212e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1180","Sams Creek Formation, quartzite"]
[1.74515928133e+04,1.27702669694e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1181","Sams Creek Formation, metabasalt"]
[8.61545771404e+02,1.44329807540e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1182","Sams Creek Formation, quartzite"]
[6.56494444911e+02,9.99007378557e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1183","Sams Creek Formation, quartzite"]
[9.89950589629e+03,1.37866531226e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1184","Sams Creek Formation, quartzite"]
[1.30241154784e+03,3.81434663449e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1185","Sams Creek Formation, marble"]
[1.24565917844e+03,5.40993169919e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1186","Sams Creek Formation, metabasalt"]
[1.19905672561e+03,2.66598673629e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1187","Sams Creek Formation, quartzite"]
[1.33834731858e+03,3.40799986160e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1188","Sams Creek Formation, quartzite"]
[5.88839260483e+02,9.43815352683e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1189","Sams Creek Formation, quartzite"]
[1.47100437263e+03,6.09749666304e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1190","Sams Creek Formation, metabasalt"]
[6.73668689427e+02,1.80263182769e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1191","Sams Creek Formation, marble"]
[2.34973972142e+03,5.95281176689e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1192","Sams Creek Formation, metabasalt"]
[1.80780760640e+03,5.07045690673e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1193","Sams Creek Formation, marble"]
[1.37341261199e+03,3.08986959811e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1194","Sams Creek Formation, metabasalt"]
[6.26385796475e+02,2.09721214965e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1195","Sams Creek Formation, marble"]
[1.39996058243e+03,2.92405431446e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1196","Sams Creek Formation, marble"]
[2.93051846359e+03,6.81541253467e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1197","Sams Creek Formation, quartzite"]
[6.83493916624e+03,3.79044326207e+05,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1198","Sams Creek Formation, metalimestone"]
[1.22062953756e+03,3.75416438919e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1199","Sams Creek Formation, marble"]
[8.80927189614e+02,1.61624379350e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1200","Sams Creek Formation, quartzite"]
[1.68974809909e+03,6.16260270780e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1201","Sams Creek Formation, marble"]
[1.93952592495e+03,4.47353509440e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1202","Sams Creek Formation, quartzite"]
[1.24775265182e+03,4.25912913888e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1203","Sams Creek Formation, marble"]
[1.01766500297e+03,2.14126606275e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1204","Sams Creek Formation, marble"]
[1.37153133818e+03,7.25019934815e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1205","Sams Creek Formation, metabasalt"]
[3.60801678754e+03,4.84527248847e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1206","Sams Creek Muscovite Phyllite"]
[9.78625402049e+02,2.76374594778e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1207","Sams Creek Formation, marble"]
[1.92156945658e+03,1.58687420782e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1208","Sams Creek Formation, metabasalt"]
[8.84843344901e+02,2.67680550267e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1209","Sams Creek Formation, marble"]
[7.82099664672e+02,1.46783982896e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1210","Sams Creek Formation, marble"]
[5.15846032037e+03,3.98047107557e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1211","Sams Creek Formation, metabasalt"]
[9.47170370084e+02,1.76481709964e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1212","Sams Creek Formation, marble"]
[4.81717286588e+02,8.54892669680e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1213","Sams Creek Formation, marble"]
[4.33217261180e+02,8.67593541784e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1214","Sams Creek Formation, marble"]
[6.47383032377e+02,1.33876493872e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1215","Sams Creek Formation, marble"]
[1.19339114318e+03,4.28186211168e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1216","Sams Creek Formation, marble"]
[1.85087364694e+03,9.08301042789e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1217","Sams Creek Formation, marble"]
[2.92107162366e+04,4.71321296750e+06,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1218","Sams Creek Muscovite Phyllite"]
[7.69391060387e+03,7.17709986236e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1219","Sams Creek Formation, quartzite"]
[1.77960690890e+03,5.70774318176e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1220","Sams Creek Formation, marble"]
[3.23135707502e+03,2.82591751834e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1221","Sams Creek Formation, marble"]
[7.92681886359e+02,2.78234580663e+04,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1222","Sams Creek Formation, hematite phyllite"]
[1.31595018974e+03,3.88288706826e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1223","Sams Creek Formation, metabasalt"]
[7.83332988440e+02,2.36406726976e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1224","Sams Creek Formation, marble"]
[6.34006608810e+02,1.41205775118e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1225","Sams Creek Formation, metabasalt"]
[5.80808297275e+02,1.04125266437e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1226","Sams Creek Formation, quartzite"]
[8.98657990529e+02,2.14997297292e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1227","Sams Creek Formation, marble"]
[7.54894423110e+02,1.50725157081e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1228","Sams Creek Formation, metabasalt"]
[6.50816643903e+03,8.60117644875e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1229","Sams Creek Formation, metabasalt"]
[3.01738104712e+02,4.39216637319e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1230","Sams Creek Formation, marble"]
[3.51323139040e+02,5.80913176303e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1231","Sams Creek Formation, marble"]
[7.28228918690e+02,1.04490084568e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1232","Sams Creek Formation, metabasalt"]
[1.67130945974e+03,8.01063123053e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1233","Sams Creek Formation, marble"]
[4.28231887671e+02,8.78771483660e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1234","Sams Creek Formation, marble"]
[1.08745629530e+03,2.39521885609e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1235","Sams Creek Formation, metabasalt"]
[7.85608878150e+03,1.19163230475e+06,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1236","Sams Creek Formation, marble"]
[8.14575708058e+02,2.28073552229e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1237","Sams Creek Formation, quartzite"]
[1.23559957182e+03,3.74512221063e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1238","Sams Creek Formation, quartzite"]
[1.12281379524e+03,4.35743339273e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1239","Sams Creek Formation, tuffaceous phyllite"]
[8.50041370519e+02,1.71195034122e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1240","Sams Creek Formation, metabasalt"]
[2.14620036379e+03,1.78451691970e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1241","Sams Creek Formation, quartzite"]
[9.50247335324e+02,1.76678676436e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1242","Sams Creek Formation, metabasalt"]
[4.00826105502e+02,7.34430185032e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1243","Sams Creek Formation, marble"]
[8.23725635124e+02,1.52971788916e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1244","Sams Creek Formation, metabasalt"]
[5.10669833264e+02,8.82296809909e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1245","Sams Creek Formation, metabasalt"]
[6.41287650954e+02,8.78588759763e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1246","Sams Creek Formation, quartzite"]
[2.34158934144e+04,1.73155380911e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1247","Sams Creek Formation, metabasalt"]
[3.75880956960e+04,5.56541771744e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1248","Sams Creek Formation, metabasalt"]
[8.49932327983e+02,1.83437863531e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1249","Sams Creek Formation, marble"]
[3.23687661623e+03,1.54434043222e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1250","Sams Creek Formation, marble"]
[1.96014031828e+03,9.32359866664e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1251","Sams Creek Formation, marble"]
[4.58168248085e+02,9.47843801692e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1252","Sams Creek Formation, marble"]
[1.07018456541e+03,1.85312934035e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1253","Sams Creek Formation, marble"]
[2.16490216603e+03,1.58516061741e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1254","Sams Creek Formation, marble"]
[3.69756279275e+02,7.49896371139e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1255","Sams Creek Formation, marble"]
[1.39291779552e+03,2.72101316083e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1256","Sams Creek Formation, metabasalt"]
[1.12751133364e+03,2.59830230374e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1257","Sams Creek Formation, metabasalt"]
[2.09891856750e+02,2.25487952770e+03,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1258","Marburg Formation, quartzite"]
[1.10945575201e+03,1.34505498535e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1259","Marburg Formation, quartzite"]
[3.79398120887e+02,7.54182932999e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1260","Sams Creek Formation, marble"]
[1.12206934154e+03,3.06013260459e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1261","Sams Creek Formation, marble"]
[2.37879426947e+02,2.86251708866e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1262","Sams Creek Formation, quartzite"]
[1.78162439385e+03,1.23348094881e+05,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1263","Sams Creek Formation, metalimestone"]
[4.21947908129e+02,1.17479790774e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1264","Sams Creek Formation, marble"]
[1.96387190220e+03,5.33399010267e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1265","Sams Creek Formation, marble"]
[5.44863958146e+02,1.62673924141e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1266","Sams Creek Formation, marble"]
[8.77713734257e+02,2.66240590454e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1267","Sams Creek Formation, marble"]
[7.90903179914e+02,1.43296349023e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1268","Sams Creek Formation, quartzite"]
[3.54426285166e+02,3.09340290835e+03,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1269","Sams Creek Formation, hematite phyllite"]
[8.28687428376e+02,2.29518879782e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1270","Sams Creek Formation, quartzite"]
[6.48510710859e+02,7.40677317213e+03,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1271","Sams Creek Formation, hematite phyllite"]
[4.33879243985e+02,5.68751072099e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1272","Sams Creek Formation, marble"]
[1.52298602100e+03,4.27987253158e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1273","Sams Creek Formation, marble"]
[7.23333649653e+02,1.46419094483e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1274","Sams Creek Formation, marble"]
[7.92259798460e+02,2.64986183989e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1275","Sams Creek Formation, marble"]
[6.98342092202e+02,1.80891929406e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1276","Sams Creek Formation, marble"]
[8.55809527766e+02,1.11543920078e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1277","Sams Creek Formation, quartzite"]
[3.38049801954e+03,2.20995176043e+05,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1278","Sams Creek Formation, hematite phyllite"]
[2.36102631839e+02,2.11749533041e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1279","Sams Creek Formation, marble"]
[4.43983102862e+03,1.80273946977e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1280","Sams Creek Formation, quartzite"]
[1.01148170330e+03,2.92831246667e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1281","Sams Creek Formation, marble"]
[5.37031214959e+02,8.80985725850e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1282","Sams Creek Formation, marble"]
[5.57007492096e+02,9.61887051385e+03,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1283","Marburg Formation, quartzite"]
[2.62901064415e+03,1.32263913719e+05,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1284","Sams Creek Formation, tuffaceous phyllite"]
[5.05038493216e+02,1.26186614387e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1285","Sams Creek Formation, marble"]
[1.29928325093e+03,5.96579598877e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1286","Sams Creek Formation, marble"]
[7.65595049949e+02,1.20967939349e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1287","Sams Creek Formation, metabasalt"]
[5.60126264985e+02,1.04866775558e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1288","Sams Creek Formation, marble"]
[3.02356490279e+03,2.20803295291e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1289","Sams Creek Formation, metabasalt"]
[2.32828457827e+03,8.52155486267e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1290","Sams Creek Formation, marble"]
[5.82973244846e+02,1.18763158112e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1291","Marburg Formation, quartzite"]
[8.73352822016e+02,2.21999859507e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1292","Sams Creek Formation, marble"]
[1.85924180618e+03,4.63569424072e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1293","Sams Creek Formation, marble"]
[2.07171132407e+03,1.24232320912e+05,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1294","Sams Creek Formation, hematite phyllite"]
[3.82412312211e+02,6.80033629537e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1295","Sams Creek Formation, quartzite"]
[7.68774482859e+02,1.01593230219e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1296","Sams Creek Formation, metabasalt"]
[6.09331618533e+02,1.12086616004e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1297","Sams Creek Formation, tuffaceous phyllite"]
[5.45778905700e+03,1.89907254495e+05,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1298","Sams Creek Formation, marble"]
[4.19616145625e+02,5.77622852350e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1299","Sams Creek Formation, marble"]
[1.05698187703e+03,4.24779775385e+04,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1300","Sams Creek Formation, hematite phyllite"]
[5.14877506469e+02,9.35755466770e+03,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1301","Sams Creek Formation, metabasalt"]
[4.19975315171e+03,2.53136103718e+05,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1302","Sams Creek Formation, metalimestone"]
[2.15376153848e+03,5.54681661700e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1303","Marburg Formation, quartzite"]
[4.21971609530e+02,7.06102915388e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1304","Sams Creek Formation, marble"]
[4.31888178694e+02,6.73144944152e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1305","Sams Creek Formation, marble"]
[1.56550653275e+03,4.52164786419e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1306","Sams Creek Formation, marble"]
[1.74528794791e+03,5.18917067239e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1307","Sams Creek Formation, marble"]
[7.12920155416e+02,8.41185923041e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1308","Sams Creek Formation, marble"]
[1.39941060284e+03,8.85590380746e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1309","Sams Creek Formation, quartzite"]
[1.41915486408e+03,6.02791029414e+04,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1310","Sams Creek Formation, hematite phyllite"]
[3.96065341221e+02,5.79591270183e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1311","Sams Creek Formation, quartzite"]
[5.68214774965e+02,9.74322155313e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1312","Sams Creek Formation, quartzite"]
[9.00914196910e+02,2.15669998686e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1313","Sams Creek Formation, quartzite"]
[5.25923979522e+03,2.65089156914e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1314","Sams Creek Formation, metabasalt"]
[1.03880247667e+03,2.05598024258e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1315","Sams Creek Formation, quartzite"]
[1.10541891795e+03,6.64606269408e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1316","Sams Creek Formation, quartzite"]
[7.39066401817e+02,1.38418814376e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1317","Sams Creek Formation, quartzite"]
[5.02102985472e+03,1.84190457463e+05,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1318","Sams Creek Formation, metalimestone"]
[7.18025641473e+02,1.69726663185e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1319","Sams Creek Formation, quartzite"]
[4.96470435080e+02,8.78367200007e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1320","Sams Creek Formation, quartzite"]
[3.20463028563e+02,5.09149129676e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1321","Sams Creek Formation, quartzite"]
[2.70459246418e+02,3.46738456454e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1322","Sams Creek Formation, marble"]
[5.08640017486e+03,2.30264790204e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1323","Sams Creek Formation, metabasalt"]
[1.98603534959e+03,1.11101696126e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1324","Sams Creek Formation, quartzite"]
[1.38613638558e+03,3.10265824197e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1325","Sams Creek Formation, metabasalt"]
[7.55651624277e+02,1.60900311350e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1326","Sams Creek Formation, marble"]
[6.39521453362e+02,1.30987235412e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1327","Sams Creek Formation, quartzite"]
[1.83548808486e+03,6.88182381910e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1328","Sams Creek Formation, marble"]
[6.69355330797e+03,2.92273489710e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1329","Sams Creek Formation, metabasalt"]
[3.08291287058e+02,3.76826839602e+03,"CZschp","certain","_Zschp",null,"DS1","Bluish-purple, hematite-rich phyllite, resembles Ijamsville Phyllite (Southworth et. al, 2008).","MUP_1330","Sams Creek Formation, hematite phyllite"]
[3.40147179698e+02,4.89968623941e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1331","Sams Creek Formation, marble"]
[7.85242133231e+02,2.23478955551e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1332","Sams Creek Formation, metabasalt"]
[3.74520106108e+02,6.84180842768e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1333","Sams Creek Formation, marble"]
[8.79356818053e+02,1.83152302375e+04,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1334","Sams Creek Formation, metalimestone"]
[1.02962246171e+03,5.12037881828e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1335","Sams Creek Formation, quartzite"]
[5.50962579373e+02,1.39876325067e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1336","Sams Creek Formation, quartzite"]
[3.84813297485e+02,5.34232186927e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1337","Sams Creek Formation, marble"]
[4.92178190973e+02,1.35134894855e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1338","Sams Creek Formation, quartzite"]
[3.84346251636e+02,8.85621527466e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1339","Sams Creek Formation, marble"]
[3.14098300880e+03,2.69629561442e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1340","Sams Creek Muscovite Phyllite"]
[3.48201091961e+02,7.72734279525e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1341","Sams Creek Formation, marble"]
[5.08727191117e+02,1.35200649706e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1342","Sams Creek Formation, marble"]
[5.32074682011e+02,1.64617530359e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1343","Sams Creek Formation, marble"]
[4.13872056257e+02,1.02050553655e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1344","Sams Creek Formation, marble"]
[4.67382463949e+02,7.80317279923e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1345","Sams Creek Formation, marble"]
[2.89018648940e+03,1.12957914546e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1346","Sams Creek Formation, quartzite"]
[9.33388357438e+02,3.66640161651e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1347","Sams Creek Formation, marble"]
[3.98735613306e+02,9.56958763854e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1348","Sams Creek Formation, marble"]
[3.14510497339e+02,5.07128848396e+03,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1349","Sams Creek Formation, tuffaceous phyllite"]
[6.31420378240e+02,1.23113357311e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1350","Sams Creek Formation, marble"]
[6.25676943938e+02,1.65262919383e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1351","Sams Creek Formation, metabasalt"]
[2.61983711776e+03,1.30468012036e+05,"CZscl","certain","_Zscl",null,"DS1","Light-gray, thinly layered, argillaceous metalimestone (Southworth et. al, 2008).","MUP_1352","Sams Creek Formation, metalimestone"]
[4.07013870263e+02,6.89647667242e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1353","Sams Creek Formation, quartzite"]
[9.42465137214e+02,2.02670774016e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1354","Sams Creek Formation, metabasalt"]
[3.60390197875e+02,6.17786106586e+03,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1355","Sams Creek Formation, quartzite"]
[3.66801815013e+02,5.85745264476e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1356","Sams Creek Formation, marble"]
[6.30154821866e+02,1.50794517816e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1357","Sams Creek Formation, marble"]
[7.94137230024e+02,1.74310096040e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1358","Sams Creek Formation, tuffaceous phyllite"]
[7.73944097678e+02,1.94035710147e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1359","Sams Creek Formation, tuffaceous phyllite"]
[8.79997638590e+02,1.38017204347e+04,"CZsctp","certain","_Zsctp",null,"DS1","Grayish red-purple and bluish-gray, variegated, vesicular phyllite with light-gray streaks and blebs of tuffaceous phyllite.","MUP_1360","Sams Creek Formation, tuffaceous phyllite"]
[1.38527439190e+03,4.31198227338e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1361","Sams Creek Formation, metabasalt"]
[7.11706683625e+02,1.39468908730e+04,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1362","Sams Creek Formation, marble"]
[6.44424124042e+03,4.90604844173e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1363","Sams Creek Formation, quartzite"]
[2.37317157613e+03,6.97219212952e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1364","Marburg Formation, quartzite"]
[1.85940932473e+03,4.73276765656e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1365","Marburg Formation, quartzite"]
[1.99001713896e+03,5.02447619850e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1366","Marburg Formation, quartzite"]
[7.14156280292e+02,1.56494087096e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1367","Sams Creek Formation, quartzite"]
[1.71244494468e+03,3.55596670679e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1368","Marburg Formation, quartzite"]
[1.35944876778e+03,4.33726654689e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1369","Sams Creek Formation, metabasalt"]
[1.27029379395e+03,2.59477041340e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1370","Sams Creek Formation, quartzite"]
[1.18379104199e+03,1.71167435271e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1371","Marburg Formation, quartzite"]
[4.26674978452e+03,4.73435862381e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1372","Sams Creek Formation, metabasalt"]
[6.20979319722e+02,1.24842915181e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1373","Sams Creek Formation, metabasalt"]
[5.32203968625e+02,9.50264535288e+03,"CZscm","certain","_Zscm",null,"DS1","Brownish-gray to grayish-reddish-purple, massive to thin-bedded, calcitic and dolomitic marble containing quartz sand. Includes minor calcareous metasiltstone.","MUP_1374","Sams Creek Formation, marble"]
[6.02244160047e+02,1.11531923535e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1375","Sams Creek Formation, quartzite"]
[2.15843793118e+03,4.97894869985e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1376","Sams Creek Formation, quartzite"]
[2.58041702436e+03,7.78035090069e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1377","Ijamsville Phyllite, quartzite"]
[1.65271436438e+03,5.55433893505e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1378","Sams Creek Formation, quartzite"]
[9.34819089944e+03,8.49406701512e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1379","Urbana Formation, quartzite"]
[9.58707734118e+03,2.63381157715e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1380","Urbana Formation, quartzite"]
[3.59661734227e+03,2.06783023731e+05,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1381","Marburg Formation, quartzite"]
[3.39710262272e+03,9.04910905323e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1382","Marburg Formation, quartzite"]
[1.03129211714e+03,2.74769353846e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1383","Sams Creek Formation, quartzite"]
[3.58234154288e+03,1.58043703311e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1384","Sams Creek Formation, metabasalt"]
[1.07714988141e+05,1.45263644053e+07,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1385","Sams Creek Formation, metabasalt"]
[1.62616060821e+03,5.28125830998e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1386","Sams Creek Formation, metabasalt"]
[3.13125453919e+04,7.55511104394e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1388","Sams Creek Formation, metabasalt"]
[4.47260841329e+02,1.22761388712e+04,"CZim","certain","_Zim",null,"DS1","Light olive-gray, sandy limestone and dusky red, calcareous quartzite occurs within phyllite locally.","MUP_1389","Ijamsville Phyllite, marble"]
[7.51499506827e+02,2.52870971543e+04,"CZic","certain","_Zic",null,"DS1","Light-gray and green, medium- to coarse-grained metagraywacke with white quartz pebbles, variegated phyllite, and green chloritic matrix.","MUP_1390","Ijamsville Phyllite, conglomeratic metagraywacke"]
[2.86972718490e+03,2.88153919390e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1391","Urbana Formation, quartzite"]
[6.43727235240e+03,7.50765297962e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1392","Sams Creek Formation, metabasalt"]
[6.34964896655e+03,2.04013003474e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1393","Urbana Formation, quartzite"]
[1.26656992241e+03,4.29990788045e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1394","Sams Creek Formation, quartzite"]
[3.31468234758e+03,8.55999804371e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1395","Jurassic Dikes"]
[1.67528317983e+03,9.48327772824e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1396","Sams Creek Formation, quartzite"]
[5.62643643158e+03,8.70833219624e+05,"Cu","certain","_u",null,"DS1","Predominately moderate olive-brown to light olive-gray, calcareous metagraywacke and metasiltstone.","MUP_1398","Urbana Formation"]
[1.61901507322e+03,6.52044105302e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1399","Ijamsville Phyllite, quartzite"]
[7.02097383799e+03,2.61660953344e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1400","Jurassic Dikes"]
[4.25699100412e+03,1.22619861245e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1401","Jurassic Dikes"]
[3.08546314451e+03,4.88915213375e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1402","Sams Creek Formation, metabasalt"]
[4.22464246776e+04,1.59617805927e+07,"Car","certain","_ar",null,"DS1","Thickly bedded, greenish-black to grayish-black, very fine-grained to fine-grained, burrow-mottled silty sandstone, interbedded with medium-gray to grayish-black, phyllitic shales 1 to 3 m thick.","MUP_1403","Araby Formation"]
[1.28496527434e+03,2.94301661498e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1404","Sams Creek Formation, quartzite"]
[4.83155844025e+04,7.66228936421e+06,"CZi","certain","_Zi",null,"DS1","Dusky blue, grayish-blue, very dusky red-purple, greenish-gray to pale olive phyllite, phyllonite, and minor slate. Phyllite contains mostly muscovite and chlorite. Lustrous sheen from mica and dark color results from abundant hematite dust.","MUP_1405","Ijamsville Phyllite"]
[1.75879165117e+03,4.14991515917e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1406","Sams Creek Formation, quartzite"]
[1.76482776816e+03,5.91710570507e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1407","Ijamsville Phyllite, quartzite"]
[3.21804817100e+03,1.08059946807e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1408","Urbana Formation, quartzite"]
[1.58228383237e+03,4.86913939975e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1409","Marburg Formation, quartzite"]
[2.85296943449e+04,3.31255784710e+06,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1410","Sams Creek Formation, metabasalt"]
[1.73165452624e+03,2.87042867602e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1411","Sams Creek Formation, quartzite"]
[5.82819087192e+04,3.53703156116e+06,"CZscs","certain","_Zscs",null,"DS1","Metasiltstone, phyllite, quartzite, and metagraywacke, undifferentiated. Light-brown metasiltstone interbedded with quartzite and calcareous metasandstone. Bedding can be recognized except where transposed in shear zones adjacent to faults.","MUP_1412","Sams Creek Formation, metasiltstone"]
[1.34013325774e+03,3.02278514581e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1413","Sams Creek Formation, quartzite"]
[1.26343083895e+03,3.41833059276e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1414","Urbana Formation, quartzite"]
[8.92138407906e+02,2.45245253728e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1415","Sams Creek Formation, quartzite"]
[1.67358176953e+03,2.76323955238e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1416","Jurassic Dikes"]
[4.89144268029e+03,1.69092541692e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1417","Sams Creek Formation, quartzite"]
[2.08478445697e+03,5.96425218594e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1418","Sams Creek Formation, quartzite"]
[5.83001941934e+03,1.83794209210e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1420","Sams Creek Formation, quartzite"]
[2.01842132151e+04,1.24493003008e+06,"CZib","certain","_Zib",null,"DS1","Dark-green and schistose metabasalt composed of chlorite, epidote, and quartz.","MUP_1421","Ijamsville Phyllite, metabasalt"]
[3.78940692929e+03,1.92408698966e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1422","Sams Creek Muscovite Phyllite"]
[3.51846374938e+03,7.30844754780e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1423","Sams Creek Formation, quartzite"]
[2.54595993730e+03,5.27290547891e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1424","Sams Creek Formation, quartzite"]
[5.20492709699e+03,1.61205173350e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1425","Urbana Formation, quartzite"]
[1.36737326956e+03,3.40078843960e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1426","Sams Creek Formation, quartzite"]
[4.76612078538e+03,1.47428295890e+05,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1427","Sams Creek Formation, quartzite"]
[1.70144270537e+03,3.28447695973e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1428","Sams Creek Formation, quartzite"]
[1.17321816201e+04,9.01641629580e+05,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1429","Urbana Formation, quartzite"]
[1.18875164748e+03,2.76167448618e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1430","Ijamsville Phyllite, quartzite"]
[5.83525715641e+02,1.49933532176e+04,"CZim","certain","_Zim",null,"DS1","Light olive-gray, sandy limestone and dusky red, calcareous quartzite occurs within phyllite locally.","MUP_1431","Ijamsville Phyllite, marble"]
[1.45679324167e+03,3.33981243843e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1432","Sams Creek Formation, metabasalt"]
[2.20312273220e+03,5.82101520744e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1433","Sams Creek Formation, quartzite"]
[2.17620976143e+03,5.92245765036e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1434","Sams Creek Formation, quartzite"]
[1.80029085892e+03,4.86367108300e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1435","Ijamsville Phyllite, quartzite"]
[3.47001414854e+03,9.24998342749e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1436","Sams Creek Formation, quartzite"]
[2.16587959962e+03,9.98871711369e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1437","Sams Creek Muscovite Phyllite"]
[2.72313054864e+03,6.33186967215e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1438","Marburg Formation, quartzite"]
[2.13849146850e+03,4.42052859007e+04,"CZmbq","certain","_Zmbq",null,"DS1","Tan to reddish quartzite. Beds of quartzite 15 to 60 cm thick (6 to 24 inches) interbedded with muscovite and chlorite phyllites. Very resistant to weathering.","MUP_1439","Marburg Formation, quartzite"]
[7.83827835157e+02,1.62318601451e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1440","Sams Creek Formation, quartzite"]
[1.61994473902e+03,4.38815243191e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1441","Ijamsville Phyllite, quartzite"]
[1.60476297207e+03,3.29830283971e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1442","Urbana Formation, quartzite"]
[2.06092324563e+03,4.97436859472e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1443","Sams Creek Formation, quartzite"]
[9.23810345807e+02,1.90850328481e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1444","Sams Creek Formation, quartzite"]
[2.51166319083e+04,1.68090124772e+06,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1445","Urbana Formation, quartzite"]
[3.89544259011e+03,1.16905649347e+05,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1446","Sams Creek Muscovite Phyllite"]
[1.64508302994e+03,4.84021088229e+04,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1447","Ijamsville Phyllite, quartzite"]
[2.09240852664e+03,7.59321408043e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1448","Sams Creek Formation, quartzite"]
[4.86861745403e+03,1.67782117680e+05,"CZiq","certain","_Ziq",null,"DS1","Yellowish-gray, fine- to medium-grained, sericitic quartzite locally intervenes between phyllite and metabasalt.","MUP_1449","Ijamsville Phyllite, quartzite"]
[1.24006876280e+03,3.95423069390e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1450","Sams Creek Formation, quartzite"]
[1.75094035025e+03,4.80903964269e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1451","Sams Creek Formation, quartzite"]
[1.73291931156e+03,5.72998156965e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1452","Sams Creek Formation, quartzite"]
[4.34414861917e+03,1.71353729965e+05,"CZib","certain","_Zib",null,"DS1","Dark-green and schistose metabasalt composed of chlorite, epidote, and quartz.","MUP_1453","Ijamsville Phyllite, metabasalt"]
[1.55116044088e+03,6.78584650150e+04,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1454","Sams Creek Muscovite Phyllite"]
[1.82865720603e+03,3.21976849877e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1455","Urbana Formation, quartzite"]
[1.09027957882e+03,2.92487605171e+04,"CZscq","certain","_Zscq",null,"DS1","Light-gray to grayish-green, medium-grained, thin-bedded to massive quartzite and minor calcareous sandstone. Contains detrital plagioclase, orthoclase, and polymictic quartz.","MUP_1456","Sams Creek Formation, quartzite"]
[8.05606295281e+02,2.24499958173e+04,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1457","Sams Creek Formation, metabasalt"]
[1.03237158751e+04,1.17060824418e+06,"CZil","certain","_Zil",null,"DS1","Light bluish-gray to medium light gray, thin-bedded, laminated, carbonaceous and argillaceous metalimestone; and minor, medium dark gray, finely laminated, carbonaceous phyllite.","MUP_1458","Ijamsville Phyllite, metalimestone"]
[4.41293558405e+03,1.47923358778e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1459","Jurassic Dikes"]
[6.57393392730e+03,3.83698355067e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1460","Jurassic Dikes"]
[2.96320587602e+03,4.23167559327e+05,"Trmp","certain","^mp",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained sandstone and reddish, variegated claystone. Sandstone beds exhibit sharp, convex-down bases, shale-pebble lag conglomerates, and fining-upward character.","MUP_1461","Manassas Formation, Poolesville Member"]
[1.72066539291e+03,2.58528106496e+04,"Trmt","certain","^mt",null,"DS1","Light-gray to light reddish-gray, subangular to subrounded, limestone and dolomite conglomerate. Clasts are predominately tan dolostone, but locally reddish-siltstone, sandstone, and some limestone clasts are prevalent.","MUP_1462","Manassas Formation, Tuscarora Creek Member"]
[1.18109811169e+03,7.44216453810e+04,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1463","Frederick Formation, Rocky Springs Station Member"]
[1.06369501099e+03,1.87013868018e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1464","Urbana Formation, quartzite"]
[1.85525591622e+03,5.78530470965e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1465","Urbana Formation, quartzite"]
[9.42326932900e+02,2.41023019836e+04,"Cuq","certain","_uq",null,"DS1","Light olive-gray and light brownish-gray, coarse-grained, thin- to medium-bedded, cross-bedded, pitted, vuggy, friable, lensoidal, and discontinuous.","MUP_1466","Urbana Formation, quartzite"]
[9.01885390212e+02,4.10578456848e+04,"CZil","certain","_Zil",null,"DS1","Light bluish-gray to medium light gray, thin-bedded, laminated, carbonaceous and argillaceous metalimestone; and minor, medium dark gray, finely laminated, carbonaceous phyllite.","MUP_1467","Ijamsville Phyllite, metalimestone"]
[6.21592558783e+02,2.05853432552e+04,"CZib","certain","_Zib",null,"DS1","Dark-green and schistose metabasalt composed of chlorite, epidote, and quartz.","MUP_1468","Ijamsville Phyllite, metabasalt"]
[8.23697240705e+03,1.12611417330e+06,"Dhbs","certain","Dhbs",null,"DS1","A suite of gray to reddish-brown thinly laminated and-or interbedded shales, siltstones, and sandstones.","MUP_1469","Harrell-Brallier-Scherr Formations (undivided)"]
[5.72347417043e+03,7.21019260781e+05,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1470","Foreknobs Formation"]
[1.38108628695e+04,2.74456482093e+06,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1471","Foreknobs Formation"]
[2.83597970401e+04,1.21481821767e+07,"Dh","certain","Dh",null,"DS1","Interbedded, reddish-brown to brownish-red, locally greenish-gray sandstone, reddish-brown siltstone, shale, and rooted claystone.","MUP_1472","Hampshire Formation"]
[1.99511349684e+04,3.61561927617e+06,"Mp","certain","Mp",null,"DS1","Light-gray, tan and reddish-brown, coarse-grained to conglomeratic, thick-bedded to cross-bedded sandstone and thin beds of gray shale and coaly shale.","MUP_1473","Purslane Formation"]
[4.12080617166e+04,4.54776051585e+06,"MDr","certain","MDr",null,"DS1","Interbedded, gray silty shale, light-gray to tan sandstone, and coaly and reddish-shale.","MUP_1474","Rockwell Formation"]
[2.56861675447e+04,1.68412494533e+07,"Dh","certain","Dh",null,"DS1","Interbedded, reddish-brown to brownish-red, locally greenish-gray sandstone, reddish-brown siltstone, shale, and rooted claystone.","MUP_1475","Hampshire Formation"]
[2.51482652784e+04,9.71562310976e+06,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1476","Foreknobs Formation"]
[2.51852783233e+04,7.74688513659e+06,"Dhbs","certain","Dhbs",null,"DS1","A suite of gray to reddish-brown thinly laminated and-or interbedded shales, siltstones, and sandstones.","MUP_1477","Harrell-Brallier-Scherr Formations (undivided)"]
[2.56517444434e+04,5.81132214127e+06,"Dm","certain","Dm",null,"DS1","Medium-gray to olive-gray massive siltstone to fine-grained sandstone occurs near the base and top of the formation and is interbedded with siltstone, sandstone, with silty, hackly shale.","MUP_1478","Mahantango Formation"]
[2.50567765128e+04,2.85920613608e+06,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1479","Needmore-Marcellus Shales"]
[2.54322249249e+04,3.21174439308e+06,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1480","Oriskany Sandstone"]
[2.55022770520e+04,2.14441743541e+06,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1481","Keyser-Helderberg Formations (undivided)"]
[2.56593395915e+04,2.60980615903e+06,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1482","Tonoloway Formation"]
[7.25518978608e+03,1.34153682051e+06,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1483","McKenzie Formation"]
[1.07888592160e+03,6.39756800481e+04,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1484","Bloomsburg Formation"]
[1.22445748587e+04,1.17617592074e+06,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1485","Bloomsburg Formation"]
[2.77496970222e+03,2.59139608808e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1486","Tonoloway Formation"]
[4.58307140409e+03,4.42678606066e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1487","Tonoloway Formation"]
[7.35772655907e+03,7.16037207349e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1488","Tonoloway Formation"]
[1.45816243468e+03,9.38995811581e+04,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1489","Rose Hill Formation"]
[4.46877045101e+03,2.42526590408e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1490","Keefer Sandstone"]
[9.70561328450e+03,1.10333977389e+06,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1491","McKenzie Formation"]
[1.62788999498e+04,1.20019447508e+06,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1492","Bloomsburg Formation"]
[6.20158324318e+03,8.65364134037e+05,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1493","Rose Hill Formation"]
[6.11415908067e+03,2.78873067599e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1494","Keefer Sandstone"]
[6.26502703957e+03,4.00023359032e+05,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1495","McKenzie Formation"]
[6.49576301739e+03,2.41754121359e+05,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1496","Bloomsburg Formation"]
[1.35017113916e+04,1.50715528424e+06,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1497","Tonoloway Formation"]
[7.21505807220e+03,1.02635991358e+06,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1498","Keyser-Helderberg Formations (undivided)"]
[1.51638350943e+03,2.59389330915e+04,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1499","Oriskany Sandstone"]
[2.14473000085e+03,1.08703877686e+05,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1500","McKenzie Formation"]
[1.43290919811e+04,7.96488558151e+05,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1501","Bloomsburg Formation"]
[7.57611040804e+02,3.19046015113e+04,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1502","Keefer Sandstone"]
[3.91382965931e+03,2.68567975487e+05,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1503","McKenzie Formation"]
[1.17373364469e+03,4.02509293600e+04,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1504","Keefer Sandstone"]
[7.25655782401e+04,1.66883547006e+07,"Swc","certain","Swc",null,"DS1","Interbedded, greenish gray to light gray, calcareous shale, and tan, dolomitic shale containing mud cracks, laminations, and salt and gypsum casts.","MUP_1505","Wills Creek Formation"]
[2.37988781143e+03,2.11308656644e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1506","Tonoloway Formation"]
[6.83338144910e+03,5.33560812650e+05,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1507","Keyser-Helderberg Formations (undivided)"]
[6.59791543960e+03,4.17633581102e+05,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1508","Oriskany Sandstone"]
[6.95099235950e+03,1.03828721020e+06,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1509","Needmore-Marcellus Shales"]
[7.73611528927e+03,2.72966163738e+06,"Dm","certain","Dm",null,"DS1","Medium-gray to olive-gray massive siltstone to fine-grained sandstone occurs near the base and top of the formation and is interbedded with siltstone, sandstone, with silty, hackly shale.","MUP_1510","Mahantango Formation"]
[7.72695302492e+03,2.00738117498e+06,"Dhbs","certain","Dhbs",null,"DS1","A suite of gray to reddish-brown thinly laminated and-or interbedded shales, siltstones, and sandstones.","MUP_1511","Harrell-Brallier-Scherr Formations (undivided)"]
[8.42717148289e+03,2.22226997560e+06,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1512","Foreknobs Formation"]
[1.20874586851e+04,8.32528305892e+06,"Dh","certain","Dh",null,"DS1","Interbedded, reddish-brown to brownish-red, locally greenish-gray sandstone, reddish-brown siltstone, shale, and rooted claystone.","MUP_1513","Hampshire Formation"]
[1.07292133418e+04,3.27106321084e+06,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1514","Foreknobs Formation"]
[1.42863660952e+04,4.85908732342e+06,"Dhbs","certain","Dhbs",null,"DS1","A suite of gray to reddish-brown thinly laminated and-or interbedded shales, siltstones, and sandstones.","MUP_1515","Harrell-Brallier-Scherr Formations (undivided)"]
[2.08343074655e+03,1.04993883354e+05,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1516","Needmore-Marcellus Shales"]
[5.52954591936e+03,1.53441330822e+06,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1517","Keyser-Helderberg Formations (undivided)"]
[8.48671699757e+03,1.07383914895e+06,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1518","Oriskany Sandstone"]
[1.14524330505e+04,1.78179647564e+06,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1519","Needmore-Marcellus Shales"]
[3.33680546242e+04,1.27847486961e+07,"Dm","certain","Dm",null,"DS1","Medium-gray to olive-gray massive siltstone to fine-grained sandstone occurs near the base and top of the formation and is interbedded with siltstone, sandstone, with silty, hackly shale.","MUP_1520","Mahantango Formation"]
[7.74649216503e+03,3.96240180560e+06,"Df","certain","Df",null,"DS1","Interbedded, olive-gray medium- to coarse-grained, cross-bedded sandstone and greenish-gray to dusky-red, fossiliferous shale and siltstone.","MUP_1521","Foreknobs Formation"]
[2.34608386375e+04,1.10952134804e+07,"Dhbs","certain","Dhbs",null,"DS1","A suite of gray to reddish-brown thinly laminated and-or interbedded shales, siltstones, and sandstones.","MUP_1522","Harrell-Brallier-Scherr Formations (undivided)"]
[1.81475277899e+04,1.62728450060e+06,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1523","Needmore-Marcellus Shales"]
[3.72398255994e+03,7.62663476365e+05,"Om","certain","Om",null,"DS1","Medium to dark gray, fissile shale at the base, overlain by, medium gray, silty shale and thinly interbedded medium-grained sandstone, and then by thick-bedded, medium-grained, fining upward sandstone at the top of the formation.","MUP_1524","Martinsburg Shale"]
[2.25199774892e+04,2.33228883773e+06,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1525","McKenzie Formation"]
[3.95302924193e+04,7.08880389640e+06,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1526","Rose Hill Formation"]
[1.87049487471e+04,3.49677443304e+06,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1527","McKenzie Formation"]
[3.60710309127e+04,1.76956416269e+06,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1528","Bloomsburg Formation"]
[3.38116703079e+04,6.46147740527e+06,"Swc","certain","Swc",null,"DS1","Interbedded, greenish gray to light gray, calcareous shale, and tan, dolomitic shale containing mud cracks, laminations, and salt and gypsum casts.","MUP_1529","Wills Creek Formation"]
[2.50613024728e+04,7.80415039999e+06,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1530","Tonoloway Formation"]
[1.91131535726e+04,1.28675882465e+06,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1531","Keyser-Helderberg Formations (undivided)"]
[7.77339762151e+03,4.68445895420e+05,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1532","Rose Hill Formation"]
[1.43470315126e+04,1.30757519532e+06,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1533","Tuscarora Sandstone"]
[1.80407648432e+04,7.75811513622e+06,"Om","certain","Om",null,"DS1","Medium to dark gray, fissile shale at the base, overlain by, medium gray, silty shale and thinly interbedded medium-grained sandstone, and then by thick-bedded, medium-grained, fining upward sandstone at the top of the formation.","MUP_1534","Martinsburg Shale"]
[1.92496067785e+04,1.70454574981e+06,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1535","Tuscarora Sandstone"]
[2.17065760733e+04,2.73416844368e+06,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1536","Rose Hill Formation"]
[1.18937224022e+04,4.79280037032e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1537","Keefer Sandstone"]
[1.26093966976e+04,1.10684380612e+06,"Sm","certain","Sm",null,"DS1","Interbedded, greenish-gray, calcareous shale and medium- to dark-gray, thinly bedded, fossiliferous limestone.","MUP_1538","McKenzie Formation"]
[1.25018583302e+04,5.44188582189e+05,"Sb","certain","Sb",null,"DS1","Interbedded, reddish-gray to brownish-gray, fine-grained sandstone and hackly shale to mudrock.","MUP_1539","Bloomsburg Formation"]
[1.19804142831e+04,1.52882223952e+06,"Swc","certain","Swc",null,"DS1","Interbedded, greenish gray to light gray, calcareous shale, and tan, dolomitic shale containing mud cracks, laminations, and salt and gypsum casts.","MUP_1540","Wills Creek Formation"]
[7.71804532921e+03,6.01273917755e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1541","Tonoloway Formation"]
[2.18184423865e+03,6.53499091808e+04,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1542","Keefer Sandstone"]
[2.44459053390e+03,1.67472159568e+05,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1543","Rose Hill Formation"]
[2.59079362796e+03,1.85747661271e+05,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1544","Tuscarora Sandstone"]
[2.29925743647e+03,8.42234119202e+04,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1545","Keefer Sandstone"]
[2.87224356483e+03,1.91503766680e+05,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1546","Rose Hill Formation"]
[3.00553193527e+03,1.43016418681e+05,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1547","Tuscarora Sandstone"]
[1.84716612418e+04,1.80497472781e+06,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1548","Keefer Sandstone"]
[1.57498697344e+04,1.22270656298e+06,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1549","Tuscarora Sandstone"]
[2.61974657194e+04,1.36225119108e+06,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1550","Keefer Sandstone"]
[1.39285374609e+04,4.89962706077e+06,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1551","Tuscarora Sandstone"]
[7.99812788303e+03,2.44960423488e+06,"Dm","certain","Dm",null,"DS1","Medium-gray to olive-gray massive siltstone to fine-grained sandstone occurs near the base and top of the formation and is interbedded with siltstone, sandstone, with silty, hackly shale.","MUP_1552","Mahantango Formation"]
[1.08913964955e+04,5.12901687888e+05,"St","certain","St",null,"DS1","Light-gray, fine- to medium-grained, medium-bedded, dense sandstone.  Locally sandstone layers are interbedded with thin gray shale. The Tuscarora is a competent ridge-maker.","MUP_1553","Tuscarora Sandstone"]
[1.05532568751e+04,1.13976112411e+06,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1554","Rose Hill Formation"]
[7.63082260578e+03,4.40083035304e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1555","Keefer Sandstone"]
[3.84752466240e+03,3.40068878296e+05,"Srh","certain","Srh",null,"DS1","Light olive to pale reddish gray, light gray, greenish gray, and deep purple shale, brownish red sandstone, and thin reddish siltstone.  The Rose Hill Formation is mostly fissile, papery shale, weathering to rusty chips.","MUP_1556","Rose Hill Formation"]
[1.48752351479e+04,2.05568850191e+06,"Sm","certain","Sm",null,"DS1","Medium grayish green to gray, calcareous shale, and interbedded argillaceous, gray limestone.   The McKenzie Formation is largely shale, mostly calcareous, fissile to lumpy or hackly in places, finely laminated in part.","MUP_1557","McKenzie Formation"]
[4.97664418495e+03,1.85366045940e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1558","Keefer Sandstone"]
[1.99554038169e+04,1.24264117326e+06,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1559","Oriskany Sandstone"]
[2.19031728172e+04,4.74405393679e+06,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1560","Keyser-Helderberg Formations (undivided)"]
[5.12838778875e+03,5.17156632508e+05,"Sto","certain","Sto",null,"DS1","Medium to light gray, fine-grained, thinly laminated, mudcracked, dolomitic limestone with thin layers of medium gray, fine-grained limestone, and tan laminated dolomite.","MUP_1561","Tonoloway Formation"]
[2.60854562307e+04,4.39422988854e+06,"Dnm","certain","Dnm",null,"DS1","Medium to dark brownish-gray to medium dark gray, calcareous, fossiliferous shale, with thin (30 cm) beds of dark-gray, argillaceous limestone.","MUP_1562","Needmore-Marcellus Shales"]
[2.46087089790e+04,1.39287040563e+07,"Dm","certain","Dm",null,"DS1","Medium-gray to olive-gray massive siltstone to fine-grained sandstone occurs near the base and top of the formation and is interbedded with siltstone, sandstone, with silty, hackly shale.","MUP_1563","Mahantango Formation"]
[2.01567843881e+04,7.63967125498e+06,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1564","Oriskany Sandstone"]
[6.66125121857e+03,3.93715468279e+05,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1565","Oriskany Sandstone"]
[6.52134761819e+03,5.30535729248e+05,"DSkh","certain","DSkh",null,"DS1","Light to medium gray, medium to thickly bedded, crystalline to cherty, crinoidal limestone.","MUP_1566","Keyser-Helderberg Formations (undivided)"]
[1.15122893111e+04,1.42789843766e+06,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1567","Oriskany Sandstone"]
[3.38616756112e+03,1.10114173807e+05,"Sk","certain","Sk",null,"DS1","Light gray to yellowish gray, fine- to medium-grained sandstone.  The unit is thin-bedded in the lower part and thick-bedded in the middle and upper part. The Keefer Sandstone is resistant to weathering and tends to form a prominent topographic ridge.","MUP_1568","Keefer Sandstone"]
[6.16231941383e+03,2.27887850329e+05,"Trmps","certain","^mps",null,"DS1","Medium-grained sandstone beds exhibiting sharp, convex-down bases, shale-pebble lag conglomerates and fining upward character.","MUP_1569","Manassas Formation, Poolesville Member, sandstone"]
[1.08119161162e+03,1.38501843826e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1570","Frederick Formation, Rocky Springs Station breccia"]
[2.29750031589e+03,5.07249108461e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1571","Frederick Formation, Rocky Springs Station breccia"]
[1.08946484123e+03,1.90413256324e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1572","Frederick Formation, Rocky Springs Station breccia"]
[1.29576935676e+03,2.59302709505e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1573","Frederick Formation, Rocky Springs Station breccia"]
[1.26431358441e+04,5.13102152407e+05,"Trmps","certain","^mps",null,"DS1","Medium-grained sandstone beds exhibiting sharp, convex-down bases, shale-pebble lag conglomerates and fining upward character.","MUP_1574","Manassas Formation, Poolesville Member, sandstone"]
[8.40101414660e+02,1.09076799656e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1575","Frederick Formation, Rocky Springs Station breccia"]
[1.89651595492e+03,3.26823790204e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1576","Frederick Formation, Rocky Springs Station breccia"]
[7.68877517998e+02,1.06682506082e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1577","Jurassic Dikes"]
[6.03620738479e+02,5.33067148998e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1578","Frederick Formation, Rocky Springs Station breccia"]
[1.41246871753e+03,1.28537003180e+05,"Trmp","certain","^mp",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained sandstone and reddish, variegated claystone. Sandstone beds exhibit sharp, convex-down bases, shale-pebble lag conglomerates, and fining-upward character.","MUP_1579","Manassas Formation, Poolesville Member"]
[2.23641333101e+03,4.43436631406e+04,"Trmt","certain","^mt",null,"DS1","Light-gray to light reddish-gray, subangular to subrounded, limestone and dolomite conglomerate. Clasts are predominately tan dolostone, but locally reddish-siltstone, sandstone, and some limestone clasts are prevalent.","MUP_1580","Manassas Formation, Tuscarora Creek Member"]
[7.76343236883e+02,8.42759285160e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1581","Jurassic Dikes"]
[9.11997657597e+02,9.27987868364e+03,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1582","Frederick Formation, Rocky Springs Station breccia"]
[3.52743493443e+03,1.06925698654e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1583","Jurassic Dikes"]
[1.04879106857e+03,6.62980630613e+04,"Trmp","certain","^mp",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained sandstone and reddish, variegated claystone. Sandstone beds exhibit sharp, convex-down bases, shale-pebble lag conglomerates, and fining-upward character.","MUP_1584","Manassas Formation, Poolesville Member"]
[1.09851700549e+03,1.30445682931e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1585","Frederick Formation, Rocky Springs Station breccia"]
[1.89475435508e+04,1.30553431297e+07,"Csq","certain","_sq",null,"DS1","Pinkish-gray to white, fine-to medium-grained granular quartzite. Medium-bedded to massive, well-sorted, graded, cross-bedded and ripple marked.","MUP_1586","Sugarloaf Mountain Quartzite"]
[9.96223185629e+03,2.86618395915e+05,"Trmt","certain","^mt",null,"DS1","Light-gray to light reddish-gray, subangular to subrounded, limestone and dolomite conglomerate. Clasts are predominately tan dolostone, but locally reddish-siltstone, sandstone, and some limestone clasts are prevalent.","MUP_1587","Manassas Formation, Tuscarora Creek Member"]
[5.75350474392e+02,2.11396393499e+04,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1588","Frederick Formation, Rocky Springs Station Member"]
[1.15814938375e+03,1.45137063404e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1589","Frederick Formation, Rocky Springs Station breccia"]
[2.09413237224e+03,4.19828691731e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1590","Frederick Formation, Rocky Springs Station breccia"]
[4.75815444252e+03,3.03897946914e+05,"Cfm","certain","_fm",null,"DS1","Thickly interbedded, black, platy shale, rubbly, dolomitic breccia, laminated lime mudstone, and black shale. A laterally continuous black shale marks the top of the member.","MUP_1591","Frederick Formation, Monocacy Member"]
[1.20905240450e+03,1.70660692266e+04,"Cfrb","certain","_frb",null,"DS1","Massive, medium-gray, sandy, polymictic breccias on the western flank of the synclinorium but are not evident on the east flank.","MUP_1592","Frederick Formation, Rocky Springs Station breccia"]
[2.72360216799e+03,1.74338493084e+05,"Csq","certain","_sq",null,"DS1","Pinkish-gray to white, fine-to medium-grained granular quartzite. Medium-bedded to massive, well-sorted, graded, cross-bedded and ripple marked.","MUP_1593","Sugarloaf Mountain Quartzite"]
[1.31583931056e+03,5.73897676914e+04,"Cu","certain","_u",null,"DS1","Predominately moderate olive-brown to light olive-gray, calcareous metagraywacke and metasiltstone.","MUP_1594","Urbana Formation"]
[6.53859942999e+02,7.84611879373e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1595","Jurassic Dikes"]
[6.04185809573e+03,1.49313077897e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1596","Jurassic Dikes"]
[2.67027347834e+04,5.97535643114e+05,"Cfms","certain","_fms",null,"DS1","Black shale that marks the top of the Monocacy Member and is more than 50 feet (15 m) thick.","MUP_1597","Frederick Formation, Monocacy Member, shale bed"]
[1.70709479585e+04,3.08981610124e+06,"Cfr","certain","_fr",null,"DS1","Interbedded dark-gray, thinly bedded, lime mudstone and black dolomitic shale, massive, medium-gray polymictic breccias, medium-gray sandy limestone, and dark-gray, flaggy lime mudstone.","MUP_1598","Frederick Formation, Rocky Springs Station Member"]
[1.90003791117e+04,2.11385886335e+06,"Om","certain","Om",null,"DS1","Medium to dark gray, fissile shale at the base, overlain by, medium gray, silty shale and thinly interbedded medium-grained sandstone, and then by thick-bedded, medium-grained, fining upward sandstone at the top of the formation.","MUP_1599","Martinsburg Shale"]
[3.02155737610e+04,1.54257132968e+07,"Ce","certain","_e",null,"DS1","Cyclically bedded, gray, thrombolitic limestone and ribbony to laminated limestone and dolomite, overlying cyclic, dark-gray limestone and dolomitic limestone and thick-bedded limestone and dolomite.","MUP_1600","Elbrook Formation"]
[5.75347882491e+03,4.52466354985e+05,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1601","Juniata Formation"]
[1.52255212061e+04,1.16621970305e+06,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1602","Juniata Formation"]
[1.79747002342e+04,1.21246038634e+06,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1603","Juniata Formation"]
[2.73087537795e+03,1.35129525069e+05,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1604","Juniata Formation"]
[3.31094138566e+03,1.44625795576e+05,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1605","Juniata Formation"]
[1.09621571985e+04,5.82925251751e+05,"Oj","certain","Oj",null,"DS1","Interbedded, reddish-brown to brownish-red, fine- to medium-grained, medium- to thick-bedded, cross-bedded sandstone and micaceous siltstone and silty shale.","MUP_1606","Juniata Formation"]
[6.50850592908e+03,1.11452414041e+06,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1607","New Oxford Formation"]
[8.47348283387e+03,9.13639011625e+05,"JTrtm","certain","J^tm",null,"DS1","Medium- to olive-gray, hard, brittle, and fractured hornfels and meta-arkose, adjacent to diabase intrusions.","MUP_1608","Thermally metamorphosed rocks"]
[9.38901441352e+02,1.84537496541e+04,"JTrtm","certain","J^tm",null,"DS1","Medium- to olive-gray, hard, brittle, and fractured hornfels and meta-arkose, adjacent to diabase intrusions.","MUP_1609","Thermally metamorphosed rocks"]
[6.24406576020e+03,3.88908487119e+05,"JTrtm","certain","J^tm",null,"DS1","Medium- to olive-gray, hard, brittle, and fractured hornfels and meta-arkose, adjacent to diabase intrusions.","MUP_1610","Thermally metamorphosed rocks"]
[4.16353605312e+03,3.67287637241e+05,"JTrtm","certain","J^tm",null,"DS1","Medium- to olive-gray, hard, brittle, and fractured hornfels and meta-arkose, adjacent to diabase intrusions.","MUP_1611","Thermally metamorphosed rocks"]
[4.85420153811e+03,4.79338583060e+05,"JTrtm","certain","J^tm",null,"DS1","Medium- to olive-gray, hard, brittle, and fractured hornfels and meta-arkose, adjacent to diabase intrusions.","MUP_1612","Thermally metamorphosed rocks"]
[1.47323374479e+03,7.99309840390e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1613","Jurassic Dikes"]
[2.70571000765e+03,2.01276193112e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1614","Jurassic Dikes"]
[3.59130504797e+03,4.12525928208e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1615","Jurassic Dikes"]
[7.02710527119e+03,9.97039602229e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1616","Jurassic Dikes"]
[2.89142057323e+03,2.98078251063e+04,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1617","Jurassic Dikes"]
[1.43398120759e+04,1.73837463386e+05,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1618","Jurassic Dikes"]
[7.77768213849e+02,5.56021462010e+03,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1619","Jurassic Dikes"]
[6.24757427601e+03,1.25328121133e+06,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1620","Jurassic Dikes"]
[3.38387167506e+04,2.69628568441e+06,"Jd","certain","Jd",null,"DS1","Medium- to dark-gray, medium- to fine-grained diabase, weathering to rusty orange-brown spheroidal boulders and cobbles.","MUP_1621","Jurassic Dikes"]
[8.00450892041e+02,1.95924393382e+04,"Trg","certain","^g",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained siltstone, claystone, mudstone, and fine-grained sandstone.","MUP_1622","Gettysburg Formation"]
[4.53070867811e+04,2.50476482401e+07,"Trg","certain","^g",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained siltstone, claystone, mudstone, and fine-grained sandstone.","MUP_1623","Gettysburg Formation"]
[3.10460114686e+04,1.80914233529e+07,"Trg","certain","^g",null,"DS1","Reddish-brown to reddish-gray, locally greenish-gray, medium-grained siltstone, claystone, mudstone, and fine-grained sandstone.","MUP_1624","Gettysburg Formation"]
[2.75171090765e+03,2.43462261619e+05,"Cfu","certain","_fu",null,"DS1","Medium- to dark-gray, thin- to medium-bedded, pyritic, argillaceous limestone and shaly limestone. Contains intervals of tan-weathering dolomitic shale and sandy brecciated limestone.","MUP_1625","Frederick Formation, undivided"]
[1.12241397477e+03,4.33106029378e+04,"Cfu","certain","_fu",null,"DS1","Medium- to dark-gray, thin- to medium-bedded, pyritic, argillaceous limestone and shaly limestone. Contains intervals of tan-weathering dolomitic shale and sandy brecciated limestone.","MUP_1626","Frederick Formation, undivided"]
[2.58604117361e+04,4.61506774332e+06,"Cfu","certain","_fu",null,"DS1","Medium- to dark-gray, thin- to medium-bedded, pyritic, argillaceous limestone and shaly limestone. Contains intervals of tan-weathering dolomitic shale and sandy brecciated limestone.","MUP_1627","Frederick Formation, undivided"]
[1.46948487759e+04,3.92773201940e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1628","Harpers Formation"]
[4.46198326904e+03,1.05359747423e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_1629","Loudoun Formation"]
[5.84704025306e+03,1.92077020382e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_1630","Weverton Formation, Maryland Heights Member"]
[3.89042351628e+03,5.45256067638e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_1631","Weverton Formation, Maryland Heights Member"]
[1.09251682125e+04,2.76044259152e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_1632","Weverton Formation, Maryland Heights Member"]
[6.02864362955e+03,1.38081246790e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_1633","Weverton Formation, Owens Creek Member"]
[2.15897324194e+03,2.32129463192e+05,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_1634","Weverton Formation, Owens Creek Member"]
[4.50440441798e+05,2.49901566960e+08,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1635","Catoctin Formation, metabasalt"]
[1.06695654629e+04,2.18878597795e+06,"Trgh","certain","^rgh",null,"DS1","Interbedded gray calcareous siltstone and shale; laminated, mudcracked, and brecciated limestone; and dark grayish-brown to reddish-brown siltstone and shale.","MUP_1636","Gettysburg Formation, Heidlersburg Member"]
[2.93184998777e+04,1.17502060252e+07,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1637","New Oxford Formation"]
[3.25072484286e+03,2.26013929131e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1638","Weverton Formation, Buzzard Knob Member"]
[9.16971086625e+04,5.54878006176e+07,"Ygl","certain","Ygl",null,"DS1","Fine- to medium-grained, tan to very light gray, massive, finely banded to indistinctly foliated chlorite-quartz-microcline-plagioclase gneiss.","MUP_1639","Basement gneiss complex, leucocratic gneiss"]
[1.33058108249e+04,3.07977449639e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_1640","Loudoun Formation"]
[1.57188451698e+03,7.63086701325e+04,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1641","New Oxford Formation"]
[1.91025195845e+05,1.15271321891e+08,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1642","New Oxford Formation"]
[1.71113459779e+04,1.14555020686e+07,"Trn","certain","^n",null,"DS1","Brownish-red to dark reddish-brown, argillaceous to silty sandstone and micaceous siltstone with subordinate interbedded silty shale and mudstone.","MUP_1643","New Oxford Formation"]
[4.15980530787e+03,8.22105027627e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1644","Catoctin Formation, metabasalt"]
[4.87947185293e+03,1.96638721882e+05,"Zcmp","certain","Zcmp",null,"DS1","Metabasalt, greenish-gray to bluish-green rock that weathers bluish-gray to dark greenish-gray.","MUP_1645","Catoctin Formation, porphyritic metabasalt"]
[8.41895726605e+03,1.31181164965e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_1649","Loudoun Formation"]
[7.57494876435e+03,8.50655395263e+05,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1650","Harpers Formation"]
[8.48848073006e+02,4.26350291981e+04,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1651","Weverton Formation, Buzzard Knob Member"]
[3.44091184019e+03,3.29492990354e+05,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_1653","Weverton Formation, Maryland Heights Member"]
[1.12842434213e+03,6.19195803990e+04,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_1654","Weverton Formation, Owens Creek Member"]
[1.62771972421e+03,6.74465067600e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_1655","Catoctin Formation, metarhyolite"]
[6.02914896373e+03,6.34515855028e+05,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1656","Harpers Formation"]
[7.71679058906e+03,1.43382567580e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_1657","Harpers Formation, metasandstone"]
[1.00816444710e+04,3.12898935685e+05,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1658","Catoctin Formation, metabasalt"]
[8.33472429300e+03,2.01234329853e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1659","Harpers Formation"]
[2.59830544296e+03,3.76822380022e+05,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1660","Harpers Formation"]
[1.65483157550e+04,2.75602398560e+06,"Cwm","certain","_wm",null,"DS1","Thin (less than 33 feet; 10 m), medium- to dark-gray quartzite and graywacke interbedded with very dark gray, highly cleaved siltstone and phyllitic shale.","MUP_1661","Weverton Formation, Maryland Heights Member"]
[9.78954231651e+03,1.44081444933e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1662","Weverton Formation, Buzzard Knob Member"]
[1.78374414103e+04,2.93384759674e+06,"Cwo","certain","_wo",null,"DS1","Dark to very dark gray, very coarse grained to conglomeratic, cross-bedded graywacke.","MUP_1663","Weverton Formation, Owens Creek Member"]
[1.18559184824e+04,1.13460785764e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1664","Harpers Formation"]
[1.60739916566e+04,1.67046584472e+06,"Ch","certain","_h",null,"DS1","Mainly phyllitic shale and siltstone, highly cleaved, dark green-gray, weathers tan; lesser amounts of metasandstones and impure gray quartzites","MUP_1665","Harpers Formation"]
[4.73520499321e+03,1.23424474958e+05,"Chm","certain","_hm",null,"DS1","Metasandstone (of mappable thickness), fine- to med-grained, highly argillaceous, dark green-gray; contains Skolithus burrows especially near top of Harpers Formation","MUP_1666","Harpers Formation, metasandstone"]
[9.15885634992e+03,1.52217260497e+06,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_1667","Loudoun Formation"]
[1.97773789384e+03,4.20976795730e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1668","Catoctin Formation, metabasalt"]
[2.07537232365e+04,1.99350338181e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_1669","Catoctin Formation, metarhyolite"]
[2.33752003531e+03,4.51503337350e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1670","Catoctin Formation, metabasalt"]
[9.74261517299e+03,1.00917623207e+06,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1671","Weverton Formation, Buzzard Knob Member"]
[3.65940810553e+04,2.71579566302e+06,"Zcrp","certain","Zcrp",null,"DS1","Porphyritic, bluish-gray metarhyolite with conspicuous very light gray to very pale orange or pinkish-gray feldspar laths.","MUP_1672","Catoctin Formation, porphyritic metarhyolite"]
[1.46005642175e+03,2.74606436116e+04,"Zcm","certain","Zcm",null,"DS1","Medium to dark greenish-gray, chloritic, locally amygdaloidal, epidote-rich metabasalt.","MUP_1673","Catoctin Formation, metabasalt"]
[3.86741986423e+03,9.13079709051e+04,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_1674","Catoctin Formation, metarhyolite"]
[2.23625409624e+04,1.11569334744e+06,"Zcr","certain","Zcr",null,"DS1","Undifferentiated bluish-gray metarhyolite in which no single variety is dominant.","MUP_1675","Catoctin Formation, metarhyolite"]
[5.45165567355e+03,3.35593382911e+05,"CZl","certain","_Zl",null,"DS1","Medium- to dark-gray, medium-bedded conglomerate and black, tuffaceous phyllite.","MUP_1676","Loudoun Formation"]
[2.24790063519e+03,2.06667787591e+05,"Cwb","certain","_wb",null,"DS1","Light-gray to medium-gray, medium-bedded quartzite with dark-gray, argillaceous layers up to 4 cm thick separating the quartzite beds. Cross-bedding within individual quartzite strata is pervasive.","MUP_1677","Weverton Formation, Buzzard Knob Member"]
[7.66960535345e+03,4.30718470807e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1678","Pinesburg Station Dolomite"]
[9.20741295710e+03,9.26560008242e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1679","St. Paul Group (undivided)"]
[8.22987411046e+03,9.41451297161e+05,"Osp","certain","Osp",null,"DS1","Massive, light-gray lime mudstone containing fenestral fabric at the base (Row Park Limestone), overlain by interbedded, medium- to light-gray, medium-bedded limestone and laminated dolomitic limestone at the top (New Market Limestone).","MUP_1680","St. Paul Group (undivided)"]
[1.05489588811e+04,8.50219067223e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1681","Chambersberg Formation"]
[1.11929227274e+04,7.67935800666e+05,"Oc","certain","Oc",null,"DS1","Medium- to dark-gray, nodular- to medium-bedded, fossiliferous limestone.","MUP_1682","Chambersberg Formation"]
[5.94677103571e+03,3.89731196711e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1683","Pinesburg Station Dolomite"]
[1.17069180691e+03,5.49442317800e+04,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1684","Pinesburg Station Dolomite"]
[1.92428170509e+03,8.39367495904e+04,"Do","certain","Do",null,"DS1","Interbedded, medium- to dark-gray, siliceous shale and sandy and cherty limestone, overlain by tan, fine-grained, calcareous sandstone, and then by light-gray, medium- to coarse-grained, thin- to thick-bedded, calcareous sandstone.","MUP_1685","Oriskany Sandstone"]
[5.97979054605e+03,1.45543378366e+06,"Orr","certain","Orr",null,"DS1","Interbedded and cyclic limestone and dolomite, cherty in the lower 400 feet (120 m).  Limestone intervals consist of medium to light gray, ribbony and thrombolitic to stromatolitic, lime mudstone to boundstone.","MUP_1686","Rockdale Run Formation"]
[1.71192453610e+03,1.25256496583e+05,"Ops","certain","Ops",null,"DS1","Light gray to tan, medium-bedded, highly fractured, fine-grained dolomite.  Weathers to a very light gray to buff surface.  Interbedded with very light gray, laminated dolomite.","MUP_1687","Pinesburg Station Dolomite"]
[2.04631698573e+05,5.35258885273e+07,"CZscmp","certain","_Zscmp",null,"DS1","Light bluish-gray, dusky yellow, and moderate orange pink, muscovite-chlorite phyllite containing albite porphyroblasts, quartz, and hematite dust. Contains minor metasiltstone.","MUP_1688","Sams Creek Muscovite Phyllite"]
[3.10569371509e+03,2.24682277512e+05,"CZscb","certain","_Zscb",null,"DS1","Dark greenish-gray to medium bluish-gray, aphanitic to porphyritic, massive to schistose metabasalt composed of chlorite, epidote, quartz, altered plagioclase, actinolite, hornblende, and albite.","MUP_1689","Sams Creek Formation, metabasalt"]
[8.60014515820e+04,9.12428954778e+07,"CZmb","certain","_Zmb",null,"DS1","Buff to light olive green quartz-muscovite phyllite with subordinate silvery gray quartz-paragonite-muscovite-chlorite phyllite and muscovite-quartz phyllite.","MUP_1690","Marburg Formation"]
[9.72058253592e+02,5.26779302900e+04,"Ogf","certain","Ogf",null,"DS1","Very thickly bedded, medium light gray, locally sandy, thrombolitic and stromatolitic algal limestone and medium-gray, laminated dolomitic limestone and olive-gray dolomite.","MUP_1691","Grove Formation, Fountain Rock Member"]