|Name||Pocono Group, including the Purslane Sandstone and Rockwell Formation|
Sedimentary > Clastic > SandstoneGray, white, tan, and brown, thin- to thick-bedded, cross-bedded sandstone
Sedimentary > Clastic > Mudstone > Shaleinterbedded gray and reddish-brown shale, mudstone, and siltstone
Sedimentary > Clastic > Mudstoneinterbedded gray and reddish-brown shale, mudstone, and siltstone
Sedimentary > Clastic > Siltstoneinterbedded gray and reddish-brown shale, mudstone, and siltstone
Sedimentary > Clastic > Conglomerate
Sedimentary > Coal
|Comments||Total thickness of Group is 250 feet in west, increases to 1,700 feet in east.|
Cleaves, E.T., Edwards, J., Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.
In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.
|Counties||Allegany - Garrett - Washington|