Ripley Formation of Selma Group (AL*,MS*,TN*)
Ripley Formation (GA*)
Chiwapa Sandstone Member (MS*), Coon Creek Tongue (TN*,MS*), Cusseta Sand Member (AL*), McNairy Sand Member (MS*), Providence Sand Member (AL),
Late Cretaceous (Campanian to Maastrichtian; Gulfian Provincial Epoch, Tayloran to Navarroan Provincial Age)*
Ripley, Tippah Co., northern MS (Hilgard, 1860).
Upper Mississippi embayment*
Mid-Gulf Coast basin*
Black Warrior basin*
South Georgia sedimentary province*
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 ([ ]).