Bluestone Formation
The Bluestone Formation is a geologic formation in West Virginia. It is the youngest unit of the Upper Mississippian-age Mauch Chunk Group. A pronounced unconformity separates the upper boundary of the Bluestone Formation from sandstones of the overlying Pennsylvanian-age Pocahontas Formation.
| Bluestone Formation | |
|---|---|
| Stratigraphic range: Serpukhovian | |
Outcrop near Camp Creek, West Virginia, showing cyclical deposits of the Pride Shale Member | |
| Type | Formation |
| Unit of | Mauch Chunk Group |
| Sub-units | "upper member", Bramwell Member, "red member", "gray member", Glady Fork Sandstone Member, Pride Shale Member |
| Underlies | Pocahontas Formation |
| Overlies | Princeton Sandstone |
| Location | |
| Region | West Virginia |
| Country | United States |
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