Reports
Seismic evidence for high angle reverse faulting in the Coastal Plain of Prince George's and Charles Counties, Maryland
1972, Jacobeen, F.H.
Information Circular 13
Abstract
During exploration for gas storage areas beneath the Maryland Coastal Plain, Washington Gas Light Company discovered two east dipping, high angle, reverse faults in the Brandywine Area in Prince Georges and Charles Counties, about 10 to 15 miles southeast of Washington, DC. The Brandywine fault system is divided into two en echelon faults. Both extend beyond and are increasing in throw toward the limits of the study area. Maximum throw seen on the southern fault, the Danville fault, is over 250 feet at the top of the Granite and top of the lower Cretaceous Arundel Formation. Throw on the northern fault, the Cheltenham fault, is about 100 feet.
Although stream anomalies and lineaments are clues to the location of buried faults, recent drilling has shown that no rupture reaches the surface; rather, the fault displacement is absorbed upward and only folding occurs in the Tertiary sediments.
