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Map showing publication footprint
  • Usage in publication:
    • Cassville Formation
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Appalachian basin
Publication:

Berryhill, H.L., and Swanson, V.E., 1962, Revised stratigraphic nomenclature for Upper Pennsylvanian and Lower Permian rocks, Washington County, Pennsylvania, IN Geological Survey Research 1962; short papers in geology, hydrology, and topography; Articles 60-119: U.S. Geological Survey Professional Paper, 450-C, p. C43., See also GeoScience Abs., v. 4, no. 12, pt. 1, Dec. 1962 (summary)


Summary:

Not used in this report area. Strata previously called Cassville are part of the lower unnamed member of the Waynesburg Formation.

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


Map showing publication footprint
  • Usage in publication:
    • Cassville Shale Member*
  • Modifications:
    • Overview
    • Age modified
  • AAPG geologic province:
    • Appalachian basin
Publication:

Rice, C.L., Hiett, J.K., and Koozmin, E.D., 1994, Glossary of Pennsylvanian stratigraphic names, central Appalachian basin, IN Rice, C.L., ed., Elements of Pennsylvanian stratigraphy, central Appalachian basin: Geological Society of America Special Paper, 294, p. 115-155.


Summary:

Cassville Shale Member formerly at base of Washington Formation above Waynesburg coal. Now assigned lower member of Waynesburg Formation at or near base of Dunkard Group. Contains flora of Zone 12 of Read and Mamay (1964). Age is Late Pennsylvanian or Early Permian based on Englund and others (1979, American Geological Institute Selected Guidebook Series No. 1).

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 ([ ]).

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