Claiborne Group (AL*,AR*,FL*,GA*,KY*,LA*,MO*,MS*,TN*,TX*)
Claiborne Formation (KY*,TN*)
GROUP STATUS (alphabetical): Bigford Formation (TX*), Cane River Formation (AR*,LA*,MS), Carrizo Sand (AR*,LA*,TX*) or Carrizo Formation (LA), Cockfield Formation (AL*,AR*,KY*,LA*,MS*,MO*,TN*,TX), Cook Mountain Formation (AR*,KY*,LA*,MS*,MO*,TN*,TX*), Crockett Formation (LA,TX), El Pico Clay (TX*), Gosport Sand (AL*), Kosciusko Formation (MS) or Kosciusko Sand (MS*), Laredo Formation (TX*), Lisbon Formation (AL*,FL*,GA*,MS), Memphis Sand (AR*,MO*,TN*), Meridian Sand (MS), Queen City Formation (TX) or Queen City Sand (TX*), Reklaw Formation (LA*,TX*), Sparta Sand (AR*,KY*,LA*,MS*,TX*) or Sparta Formation (LA,TX), Stone City Formation (TX), Tallahatta Formation (AL*,FL*,GA*,KY*,MS*), Weches Formation (LA,TX*) or Weches Greensand (LA,TX*), Winona Formation (MS*) or Winona Marl (MS*) or Winona Sand (MS*), Yegua Formation (LA,TX*), Zilpha Clay (MS*) or Zilpha Shale (MS).
early Tertiary (early to middle Eocene)*
Named from exposures at Claiborne Bluff and Claiborne Landing, on Alabama River, Monroe Co., southwestern AL (US geologic names lexicons, USGS Bull. 896, 1200).
Black Warrior basin*
East Texas basin*
Gulf Coast basin*
Mid-Gulf Coast basin*
Ouachita folded belt*
South Georgia sedimentary province*
Upper Mississippi embayment*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.
"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).