Bluestone and Princeton Formations

(part of Mauch Chunk Group) - the Bluestone Formation is mostly red, green, and medium-gray shale and sandstone; Princeton Sandstone is underneath.
State West Virginia
Name Bluestone and Princeton Formations
Geologic age Mississippian
Lithologic constituents
Major
Sedimentary > Clastic > Sandstonethe Bluestone Formation is mostly red, green, and medium-gray shale and sandstone; Princeton Sandstone is underneath.
Sedimentary > Clastic > Mudstone > ShaleBluestone Formation is mostly red, green, and medium-gray shale and sandstone
Comments Thickness: Southeastern 450-800 ft
References

Cardwell, D.H., Erwin, R.B., and Woodward, H.P., 1968 (slightly revised 1986), Geologic Map of West Virginia: West Virginia Geological and Economic Survey, Map 1, East Sheet, scale 1:250,000.

NGMDB product
Counties Fayette - Greenbrier - McDowell - Mercer - Nicholas - Pendleton - Pocahontas - Raleigh - Randolph - Summers - Tucker - Webster