Monongahela Formation
Geologic formation in West Virginia, Pennsylvania, and Ohio, United States / From Wikipedia, the free encyclopedia
The Monongahela Formation is a geologic formation in West Virginia, Pennsylvania, Ohio, and Maryland. It is dated to the Carboniferous period. The top of the group is marked by the Waynesburg Coal (No. 11 Coal) and its base is marked by the Pittsburgh coal seam (No. 8 Coal). The Pittsburgh coal is the thickest and most extensive (11,000 sq mi) bituminous coal bed in the Appalachian Basin[2]
Quick Facts Type, Sub-units ...
Monongahela Formation, also Monongahela Group | |
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Stratigraphic range: Upper Pennsylvanian Gzhelian ~300–303 Ma | |
Type | Group in Ohio, Pennsylvania, parts of West Virginia and Maryland, sometimes also seen as Formation |
Sub-units | Uniontown Formation
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Underlies | Washington Formation[1] |
Overlies | Conemaugh Group |
Location | |
Region | West Virginia, Pennsylvania, Ohio, Maryland |
Country | United States |
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