| 2.1 Has required elements: nonspatial tables DataSources, DescriptionOfMapUnits, GeoMaterialDict; feature dataset GeologicMap with feature classes ContactsAndFaults and MapUnitPolys | PASS |
| 2.2 Required fields within required elements are present and correctly defined | PASS |
| 2.3 GeologicMap topology: no internal gaps or overlaps in MapUnitPolys, boundaries of MapUnitPolys are covered by ContactsAndFaults | PASS |
| 2.4 All map units in MapUnitPolys have entries in DescriptionOfMapUnits table | PASS |
| 2.5 No duplicate MapUnit values in DescriptionOfMapUnit table | PASS |
| 2.6 Certain field values within required elements have entries in Glossary table | PASS |
| 2.7 No duplicate Term values in Glossary table | PASS |
| 2.8 All xxxSourceID values in required elements have entries in DataSources table | PASS |
| 2.9 No duplicate DataSources_ID values in DataSources table | PASS |
| 3.1 Table and field definitions conform to GeMS schema | FAIL 1 missing or mis-defined element(s) |
| 3.2 All map-like feature datasets obey topology rules. No MapUnitPolys gaps or overlaps. No ContactsAndFaults overlaps, self-overlaps, or self-intersections. MapUnitPoly boundaries covered by ContactsAndFaults | PASS |
| 3.3 No missing required values | FAIL 88 missing required value(s) |
| 3.4 No missing terms in Glossary | PASS |
| 3.5 No unnecessary terms in Glossary | FAIL 8 unnecessary term(s) in Glossary |
| 3.6 No missing sources in DataSources | PASS |
| 3.7 No unnecessary sources in DataSources | PASS |
| 3.8 No map units without entries in DescriptionOfMapUnits | PASS |
| 3.9 No unnecessary map units in DescriptionOfMapUnits | PASS |
| 3.10 HierarchyKey values in DescriptionOfMapUnits are unique and well formed | PASS |
| 3.11 All values of GeoMaterial are defined in GeoMaterialDict. GeoMaterialDict is as specified in the GeMS standard | PASS |
| 3.12 No duplicate _ID values | FAIL 3 duplicated _ID value(s) |
| 3.13 No zero-length or whitespace-only strings | FAIL 1 zero-length or whitespace string(s) |
| MapUnit | DMU | GeologicMap |
|---|---|---|
| Qal | X | X |
| Qt | X | X |
| Trg | X | X |
| Trn | X | X |
| Trns | X | X |
| Trni | X | X |
| OBJECTID | Source | Notes | URL | _ID |
|---|---|---|---|---|
| 4 | Brezinski, D.K., 2021, Geologic map of the Maryland Portion of the Emmitsburg and Taneytown Quadrangles, Frederick and Carroll Counties, Maryland | --- | --- | DS01 |
| 5 | American Geological Institute, 2012, Glossary of Geology | --- | --- | DS02 |
| 1 | Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. | --- | https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php | FGDC-STD-013-2006 |
| OBJECTID | MapUnit | Name | FullName | Age | Description | HierarchyKey | ParagraphStyle | Label | Symbol | AreaFillRGB | AreaFillPatternDescription | DescriptionSourceID | GeoMaterial | GeoMaterialConfidence | _ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Qal | Alluvium | Alluvium | Quaternary | Medium to dark grayish brown, locally reddish brown, poorly sorted, unconsolidated cobbles, pebbles, sand, silt. Locally thicker layers of moderately sorted, rounded cobbles or pebbles reflecting previous locations of stream channel. Thickness is typically less than 3 feet, but locally may be as thick as 10 feet.Medium to dark grayish brown, locally reddish brown, poorly sorted, unconsolidated cobbles, pebbles, sand, silt. Locally thicker layers of moderately sorted, rounded cobbles or pebbles reflecting previous locations of stream channel. Thickness is typically less than 3 feet, but locally may be as thick as 10 feet. Medium to dark grayish brown, locally reddish brown, poorly sorted, unconsolidated cobbles, pebbles, sand, silt. Locally thicker layers of moderately sorted, rounded cobbles or pebbles reflecting previous locations of stream channel. Thickness is typically less than 3 feet, but locally may be as thick as 10 feet. | 1-1 | Header1 | Qal | none | 255,255,179 | no pattern | DS01 | Alluvial sediment | High | DMUID01 |
| 2 | Qt | Terrace Deposits | Terrace Deposits | Quaternary | Reddish brown, clayey to sandy matrix containing rounded pebbles to cobbles of sandstone, vein quartz, and quartzite. These deposits are locally present along current stream levels of Toms Creek and the Monacacy River, but at a higher level than the present stream level. Thickness ranges from a thin veneer to more than 10 feet thick. | 1-2 | Header1 | Qt | none | 255,242,102 | no pattern | DS01 | Sedimentary material | High | DMUID02 |
| 6 | Trg | Gettysburg Formation | Gettysburg Formation | Triassic | Cyclically interbedded reddish gray, laminated, very fine-grained sandstone, sandy siltstone and red to reddish brown shale to rooted mudstone. Sandstone and siltstone intervals are commonly laminated to cross-laminated and siltstone intervals are mudcracked. Mudstone intervals are pervasively rooted and show signs of incipient soil development. Along the base of Catoctin Mountain a narrow belt of limestone conglomerate marks the western edge of the Gettysburg Basin in Maryland. The thickness of the Gettysburg Formation is 8,000 feet (2,440 m) Emmitsburg Quadrangle. | 4 | Header1 | ^g | none | 175,217,217 | no pattern | DS01 | Sandstone and mudstone | High | DMUID06 |
| 8 | Trn | New Oxford Formation | New Oxford Formation | Triassic | The New Oxford Formation consists of interbedded, gray, pinkish gray, and reddish brown, fine- to coarse-grained sandstone, brownish red to reddish gray siltstone, red mudstone, shale, and calcareous claystone. Sandstone or sandstone-dominated intervals (Trns) are mapped where they can be identified. Sandstone intervals in the lower part of the formation are gray, coarse to very coarse grained, cross-bedded, exhibit sharp bases, and are interbedded with rooted calcareous mudstone containing caliche paleosols. Higher in the formation, sandstones are more lenticular, and are red-brown in color, and are increasingly finer grained, and interbedded with red, silty shale. These lenticular red sandstone intervals contain sharp, erosional bases and distinctive large-scale epsilon cross-bedding and a upsection fining. Mudstone and claystone intervals in this part of the formation are thoroughly root-mottled and contain light gray, caliche carbonated nodules. Thickness is estimated at 6000 feet in the Emmitsburg Quadrangle. | 5 | Header1 | ^n | none | 171,247,243 | no pattern | DS01 | Sandstone and mudstone | High | DMUID08 |
| 18 | Trns | Sandstone beds | New Oxford Formation, sandstone beds | Triassic | The New Oxford Formation consists of interbedded, gray, pinkish gray, and reddish brown, fine- to coarse-grained sandstone, brownish red to reddish gray siltstone, red mudstone, shale, and calcareous claystone. Sandstone or sandstone-dominated intervals (Trnos) are mapped where they can be identified. Sandstone intervals in the lower part of the formation are gray, coarse to very coarse grained, cross-bedded, exhibit sharp bases, and are interbedded with rooted calcareous mudstone containing caliche paleosols. Higher in the formation, sandstones are more lenticular, and are red-brown in color, and are increasingly finer grained, and interbedded with red, silty shale. These lenticular red sandstone intervals contain sharp, erosional bases and distinctive large-scale epsilon cross-bedding and a upsection fining. Mudstone and claystone intervals in this part of the formation are thoroughly root-mottled and contain light gray, caliche carbonated nodules. Thickness is estimated at 6000 feet in the Emmitsburg Quadrangle. | 5-1 | Header1 | ^ns | none | 120,201,168 | no pattern | DS01 | Sandstone | High | DMUID18 |
| 9 | Trni | Irishtown Member | New Oxford Formation, Irishtown Member | Triassic | Thin and discontinuous lenses and wedges of reddish brown, moderately well sorted, poorly cemented quartz-pebble conglomerate interbedded with red brown coarse-grained sandstone and red mudstone. Pebbles are equidimensional and typically moderate well to well-rounded. Locally, pebbles exhibit indication of cross-bedding and grading from pebbles and cobbles to granules. Present at the base of the New Oxford Formation, but not mapped separately. Thickness is 0 to 350 feet. | 5-2 | Header2 | ^noi | none | 100,152,254 | no pattern | DS01 | Clastic sedimentary rock | High | DMUID09 |
| OBJECTID | Term | Definition | DefinitionSourceID | _ID |
|---|---|---|---|---|
| 13 | bedding | The arrangement of sedimentary rocks in beds or layers of varying thickness and character; the general physical structural character or pattern of the beds and their contacts within a rock mass, such as cross-bedding and graded bedding; a collective term denoting the existence of beds. Also, the structure so produced. The term may be applied to the layered arrangement and structure of an igneous or metamorphic rock. | DS02 | GLID_13 |
| 7 | certain | Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. | FGDC-STD-013-2006 | GLID_7 |
| 14 | cleavage | A locally planar fabric in an unmetamorphosed or weakly metamorphosed, fine-grained rock defined by either the tendency of a rock to split in a particular direction, a preferred orientation of crystal planes in mineral grains, or a preferred orientation of inequant grain shapes; it is a produce of deformation or metamorphism. | DS02 | GLID_14 |
| 15 | contact | A plane or irregular surface between two types or ages of rock; examples are faults, intrusive borders, bedding planes separating distinct strata, and unconformities. | DS02 | GLID_15 |
| 16 | fault | A discrete surface or zone of discrete surfaces separating two rock masses across which one mass has slid past the other. | DS02 | GLID_16 |
| 17 | fold axis | A line which, when moved parallel to itself, traces out a folded surface. It applies only in the case of cylindrical folds. | DS02 | GLID_17 |
| 18 | foliation | A general term for a planar arrangement of textural or structural features in any type of rock, esp. the locally planar fabric in a rock defined by a fissility, a preferred orientation of crystal planes in mineral grains, a preferred orientation of inequant grain shapes, or from compositional banding. In igneous rock, planar parallelism of flaky or tabular mineral and mineral aggregates, slabby xenoliths, or flattened vesicles as well as compositional layering. Inmetamorphic rocks, planar parallelism of flaky minerals and compositional layering. | DS02 | GLID_18 |
| 3 | Header1 | Formation header, bolded text, no indent. This format is used for Formations, Quaternary deposits, and basement complex. | DS01 | GLID_3 |
| 4 | Header2 | Member header, bolded text, indented. This format is used for named members (e.g. Dargan Member, under Tomstown Formation) and for sub-units without proper names (e.g. Phyllite, under Swift Run Formation). | DS01 | GLID_4 |
| 5 | Header3 | Group header, bolded text, capitalized, no indent. | DS01 | GLID_5 |
| 12 | High | High level of confidence that GeoMaterial term accurately and appropriately describes the map unit. | FGDC-STD-013-2006 | GLID_12 |
| 19 | joint | A planar fracture, crack, or parting in a rock, without shear displacement; the surface is usually decorated with a plumose structure. Often occurs with parallel joints to form part of a joint set. | DS02 | GLID_19 |
| 8 | lineation | A general, nongeneric term for a locally linear structure or fabric in a rock, e.g. flow lines, scratches, striae, slickensides or slickenfibers on a single surface; linear arrangements of components in sediments; or axes in folds. Lineation in metamorphic rocks include aligned rod-shaped and/or elongate minerals grains, crenulation fol axes, and the lines of intersection between bedding and cleavage or any two sets of oriented surfaces. | DS02 | GLID_8 |
| 20 | pit, hand dug | Pit - definition (b) A shallow excavation, up to several meters depth, dug to expose a soil or geologic section of relative soft sediments. | DS02 | GLID_20 |
| 2 | questionable | Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." | FGDC-STD-013-2006 | GLID_2 |