Washington Formation
The Washington Formation is a coal, sandstone, and limestone geologic formation in West Virginia.[1] It preserves fossils dating back to the Permian period.
| Washington Formation | |
|---|---|
| Stratigraphic range: Pennsylvanian-Permian | |
| _2.jpg.webp) Bituminous coal (Washington Coal, Upper Pennsylvanian; Ohio) | |
| Type | Formation | 
| Unit of | Dunkard Group[1] | 
| Underlies | Greene Formation | 
| Overlies | Monongahela Group | 
| Lithology | |
| Primary | limestone, sandstone, coal | 
| Other | shale | 
| Location | |
| Region |  Ohio and  West Virginia | 
| Country | United States | 
References
    
- Berryhill, Jr., Henry L.; Swanson, Vernon E. (1962). "Geological Survey research 1962; Short papers in geology and hydrology" (PDF). U. S Geological Survey Professional Paper. 450-C: 43–46. Retrieved 30 June 2018.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021. {{cite web}}:|author=has generic name (help)
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