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National Geologic Map Database

Geologic Unit: Selma

Usage:

Selma Group (AL*,MS*,TN*)


Subunits:

Mooreville Chalk/Formation (AL*,MS*), Coffee Sand (TN*,MS*), Demopolis Chalk/Formation (AL*,MS*), Ripley Formation (AL*,MS*,TN*), Prairie Bluff Chalk (AL*,MS*), Owl Creek Formation (MS*,TN*), Eutaw Formation (AL), Providence Sand (AL*), and Blufftown Formation (AL*)


Geologic age:

Late Cretaceous*


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

Not designated. Named from Selma, Dallas Co., AL.


AAPG geologic province:

Mid-Gulf Coast basin*
Black Warrior basin*
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 ([ ]).