Disturbed zones:  indicators of subsurface faults and possible hydrocarbon traps in the Valley and Ridge and Appalachian Plateau Provinces of Pennsylvania, Maryland, Virginia, and West Virginia.  By Howard A. Pohn and Terri L. Purdy
Contributors: Purdy, T.L.
Publisher: Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 11
Subjects: Geology, Structural
Other titles: Evolution of sedimentary basins - Appalachian Basin
Notes: 11