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  • Usage in publication:
    • Browns Mills limestone member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Swartz, F.M., and Thompson, R.R., 1958, Commercial possibilities of some Ordovician limestones in Franklin County, Pennsylvania: Pennsylvania State University, Mineral Industries Experiment Station Bulletin, no. 71, p. 1-14.


Summary:

Named the Browns Mills limestone member of the Row Park limestone in central southern PA. Unit is a dark-gray limestone in the upper part of the formation. Overlies Social Island limestone member and underlies New Market limestone. The Browns Mills is of Middle Ordovician age.

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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