| State | West Virginia |
|---|---|
| Name | Black River Group |
| Geologic age | Ordovician |
| Lithologic constituents | Major
Sedimentary > Carbonate > Limestonepredominantly gray aphanitic limestones, with many bioclastic streaks; siliceous in the lower part.
|
| Comments | Thickness: Northeastern 350 ft, Western 255 ft, Southeastern 215 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 | Pendleton |