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Geologic Unit: Colvin
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  • Usage in publication:
    • Colvin's Run limestone*
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

White, I.C., 1891, Stratigraphy of the bituminous coal field of Pennsylvania, Ohio, and West Virginia: U.S. Geological Survey Bulletin, 65, 212 p.


Summary:

Named as part of Dunkard Creek series [Dunkard group]. Named for Colvin's Run, a stream in Greene Co., southwestern PA. Extends into WV but is seldom seen there. Consists of buffish limestone. Thickness is 0 to 10 ft, 3 ft at type locality. Lies 0 to 1 ft above Waynesburg "A" coal and 30 to 35 ft below Waynesburg "B" coal. Age is Permian based on overall age of Dunkard (p. 41).

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).