State | West Virginia |
---|---|
Name | Helderberg Group |
Geologic age | Devonian |
Lithologic constituents |
Major
Sedimentary > Carbonate > Limestonemostly cherty limestone
Minor
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Shale
|
Comments | Includes: Rocky Gap Sandstone (USGS) used on Southeastern columnar section. Thickness: Northeastern 350-445 ft, Western 210 ft, Southeastern 0-50 ft, Southeastern - Rocky Gap Sandstone 175 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 | Grant - Greenbrier - Hampshire - Hardy - Mineral - Pendleton - Pocahontas |