Geologic Unit: Big Mountain
Big Mountain Shale Member of Keyser Limestone (WV*,VA*)
Exposures at Big Mountain, about 1.5 mi west of village of Upper Tract, Pendleton Co., east-central WV. (Swartz, 1929)
Unit Name History:
Named (Swartz, 1929). Age changed (Cardwell, 1968). Age modified to Late Silurian, only (Denkler and Harris, 1988).
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U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
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Last modified: 15-Jan-2013