Pottsville Formation
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The Pennsylvanian Pottsville Formation is a mapped bedrock unit in Pennsylvania, western Maryland, West Virginia, Ohio, and Alabama. It is a major ridge-former in the Ridge-and-Valley Appalachians of the eastern United States.[3] The Pottsville Formation is conspicuous at many sites along the Allegheny Front, the eastern escarpment of the Allegheny or Appalachian Plateau.
Quick Facts Type, Sub-units ...
Pottsville Formation | |
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Stratigraphic range: Pennsylvanian | |
Type | sedimentary |
Sub-units | see Stratigraphy section |
Underlies | Brookville Coal of Allegheny Formation (OH, PA)[1] Llewellyn Formation |
Overlies | Coldwater Shale, Cuyahoga Formation, Logan Formation, Mauch Chunk Formation, Maxville Limestone, and Parkwood Formation |
Lithology | |
Primary | sandstone, conglomerate |
Other | limestone, shale, coal |
Location | |
Region | Appalachian Mountains |
Extent | Alabama, Maryland, Mississippi, Ohio, Pennsylvania, and West Virginia |
Type section | |
Named for | Pottsville, Pennsylvania |
Named by | J. P. Lesley, 1876[2] |
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