| Monongahela Formation, also Monongahela Group | |
|---|---|
| Stratigraphic range: Upper Pennsylvanian Gzhelian ~300–303 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
_2.jpg) Coal from the Monongahela Formation | |
| Type | Group in Ohio, Pennsylvania, parts of West Virginia and Maryland, sometimes also seen as Formation |
| Sub-units | Uniontown Formation
|
| Underlies | Washington Formation |
| Overlies | Conemaugh Group |
| Location | |
| Region | West Virginia, Pennsylvania, Ohio, Maryland |
| Country | United States |
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
References
- Martin, Wayne D. (1998). "GEOLOGY OF THE DUNKARD GROUP (UPPER PENNSYLVANIAN-LOWER PERMIAN) IN OHIO, WEST VIRGINIA, AND PENNSYLVANIA" (PDF). Bulletin. 73: 1–49. Retrieved 14 November 2019.
- Ruppert, Leslie F; Tewalt, Susan J; Bragg, Linda J; Wallack, Rachel N (2000). "A digital resource model of the Upper Pennsylvanian Pittsburgh coal bed, Monongahela Group, northern Appalachian basin coal region, USA". International Journal of Coal Geology. 41 (1–2): 3–24. doi:10.1016/s0166-5162(99)00009-9. ISSN 0166-5162.
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