Washington Formation
| Washington Formation Stratigraphic range: Pennsylvanian-Permian |
|
|---|---|
| Type | Formation |
| Underlies | Greene Formation |
| Overlies | Monongahela Group |
| Location | |
| Region |
 West Virginia
|
| Country |
 United States
|
The Washington Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Permian period.
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Wikipedia