State | South Carolina |
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Name | Penholoway Formation |
Geologic age | Pleistocene |
Lithologic constituents | Major
Unconsolidated > Fine-detrital > ClayUnit consists of clayey sand and clay facies; silty to sandy clay, medium-gray to medium bluish-gray, weathers to very light gray, frequently well laminated. Unit is up to 15 feet (5 meters) thick.
Unconsolidated > Coarse-detrital > SandUnit consists of clayey sand and clay facies; silty to sandy clay, medium-gray to medium bluish-gray, weathers to very light gray, frequently well laminated. Unit is up to 15 feet (5 meters) thick.
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Comments | Secondary unit description from USGS Lexicon (ref.SC003): Penholoway Formation of Pleistocene age is used in SC. Unit consists of clayey sand and clay facies; silty to sandy clay, medium-gray to medium bluish-gray, weathers to very light gray, frequently well laminated. Unit is up to 15 feet (5 meters) thick. |
References | Newell, Wayne L., Prowell, David (retired), Krantz, David, Powars, David, Mixon, Robert (retired), Stone, Byron, and Willard, Debra, in review, Surficial Geology and Geomorphology of the Atlantic Coastal Plain: USGS Open File Report, in press.USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/https://ngmdb.usgs.gov/Geolex/search |
Counties | Aiken - Allendale - Bamberg - Barnwell - Berkeley - Charleston - Chesterfield - Colleton - Dillon - Dorchester - Florence - Georgetown - Hampton - Horry - Jasper - Marion - Marlboro - Williamsburg |