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National Geologic Map Database
Geologic Unit: Surgener
Map showing publication footprint
  • Usage in publication:
    • Surgener formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Mudstone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Cooper, G.A., 1956, Chazyan and related brachiopods [U.S.-Canada]: Smithsonian Miscellaneous Collections, v. 127, pt. 1, 1245 p.


Summary:

Named the Surgener formation in southwestern VA and northeastern TN for Surgener Cemetery, Lee Co., VA. Consists of chalky weathering dark limestone, cherty dark limestone, gray to buff mudstone, and maroon mudstone. Underlies Dryden formation. At Hagan, VA, sequence includes Poteet, Rob Camp, and Martin Creek formations of Miller and Brosge (1950). The Surgener is of Middle Ordovician (Mohawkian) age.

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


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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).