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  • Usage in publication:
    • Parr Branch Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Conglomerate
  • AAPG geologic province:
    • Appalachian basin
Publication:

McConnell, K.I., and Costello, J.O., 1984, Basement-cover rock relationships along the western edge of the Blue Ridge thrust sheet in Georgia, IN Bartholomew, M.J., ed., The Grenville event in the Appalachians and related topics: Geological Society of America Special Paper, 194, p. 263-280.


Summary:

The Parr Branch Formation of the Snowbird Group of the Ocoee Supergroup is here named in a small unnamed anticlinorium of Grenville-age basement rocks along the western margin of the Blue Ridge thrust sheet in the Fort Mountain area of north-central GA. Consists of metamorphosed coarse, bouldery conglomerate derived from the nonconformably underlying Fort Mountain Gneiss. Conformably underlies the Wilhite Formation of the Walden Creek Group. Is the lithostratigraphic equivalent of the Pinelog Formation of the Snowbird Group in the Salem Church anticlinorium to the south. Age is Middle Proterozoic.

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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