Usage:
Ashley Formation of Cooper Group (SC*)
Ashley Member of Cooper Formation (SC*)
Subunits:
FORMATION STATUS (alphabetical) --all in SC: Gettysville Member, Givhans Ferry Member, Runnymede Marl Member.
Geologic age:
early Tertiary (early Oligocene)*
Type section, locality, area and/or origin of name:
Named from exposures [no longer extant] along Ashley River, Dorchester Co., southern SC (M. Tuomey, 1848, Agricultural Survey of South Carolina, 1st Rpt., p. 162-169, 190, 211; US geologic names lexicon, USGS Bull. 896, p. 81; Ward and others, 1979).
Principal reference locality: bluff on east bank of Edisto River, Givhans Ferry State Park, Lat. 33.0321 deg. N., Long. 80.3882 deg. W., NAD83, Maple Cane Swamp 7.5-min quadrangle, Colleton Co., southern SC (Ward and others, 1979; see also Weems and others, 2016).
Reference section: at Giant Portland Cement Company quarry, 3.2 km north of Harleyville, east of Route 453, Dorchester Co., southern SC (Ward and others, 1979).
AAPG geologic province:
Atlantic Coast basin*
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 ([ ]).