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National Geologic Map Database

Geologic Unit: Ripley

Usage:

Ripley Formation of Selma Group (AL*,MS*,TN*)
Ripley Formation (GA*)


Subunits:

Chiwapa Sandstone Member (MS*), Coon Creek Tongue (TN*,MS*), Cusseta Sand Member (AL*), McNairy Sand Member (MS*), Providence Sand Member (AL),


Geologic age:

Late Cretaceous (Campanian to Maastrichtian; Gulfian Provincial Epoch, Tayloran to Navarroan Provincial Age)*


Type section, locality, area and/or origin of name:

Ripley, Tippah Co., northern MS (Hilgard, 1860).


AAPG geologic province:

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 ([ ]).