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Geologic Units: Rudd Branch
  • Usage in publication:
    • Rudd Branch beds*
  • Modifications:
    • First used
  • Dominant lithology:
    • Sand
  • AAPG geologic province:
    • Atlantic Coast basin
Publication:

Weems, R.E., Lemon, E.M., Jr., and Nelson, M.O., 1997, Geology of the Pringletown, Ridgeville, Summerville, and Summerville Northwest 7.5-minute quadrangles, Berkeley, Charleston, and Dorchester Counties, South Carolina: U.S. Geological Survey Miscellaneous Investigations Series Map, I-2502, 9 p., scale 1:24,000 and 1:48,000


Summary:

Informally named the Rudd Branch beds in the Charleston, SC area. Consists of dusky-green to grayish-olive-green, fine-grained, silty quartz-phosphate sand. Unit occurs only in subsurface. Thickness is 3 meters. Overlies the Ashley Formation (basal contact marked by sparse, subrounded phosphate pebbles) and underlies the Raysor Formation. The Rudd Branch is of middle and late Miocene 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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