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Geologic Unit: Fishpot
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Map showing publication footprint
  • Usage in publication:
    • Fishpot limestone member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Stevenson, J.J., 1876, Report of progress in the Greene and Washington district of the bituminous coal fields of western Pennsylvania: Pennsylvania Geological Survey Report of Progress, 2nd series, v. K, 419 p.


Summary:

Named as a member in Monongahela formation. Probably named for Fishpot Run, southern Washington Co., western PA. Consists of limestone. Thickness at type locality is 30 ft; thins at WV State line. Separated from overlying Sewickley coal by 10 ft of sandstone and from underlying Redstone coal by 25 ft of sandstone or sandy shale. [Age is Pennsylvanian.]

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


Map showing publication footprint
  • Usage in publication:
    • Fishpot Member*
  • Modifications:
    • Revised
    • Age modified
  • 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:

Pittsburgh lithologic units revised as one formation in Monongahela Group (rank raised). Includes (ascending) a lower unnamed member, Redstone Member, Fishpot Member, Sewickley Member, and upper unnamed member. Figure 75.2 shows that strata in the interval represented by Fishpot Limestone of old usage are reassigned to top of Redstone Member (revised) of Pittsburgh Formation. Fishpot Member now includes basal Fishpot coal bed and thin-bedded sandstone [probably the former Fishpot Sandstone Member of the Monongahela Formation]. Age is changed from Pennsylvanian to Late Pennsylvanian.

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


Map showing publication footprint
  • Usage in publication:
    • Fishpot Member*
  • Modifications:
    • Overview
  • 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:

Fishpot Member consists of mainly siltstone and mudstone between Redstone and Sewickley Members of Pittsburgh Formation of Monongahela Group in PA. Equivalent to Fishpot cyclothem (Monongahela Group) of OH which includes sandstone, redbeds, nonmarine limestone, underclay, and Fishpot coal.

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


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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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