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National Geologic Map Database

Geologic Unit: Chickasha

Usage:

Chickasha Formation of El Reno Group (OK*)
[?] Chickasha Tongue of Flower-pot Shale of El Reno Group (OK)


Geologic age:

Early Permian (Cisuralian; Leonardian)*


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

Named from city of Chickasha, which is built on this formation, Grady Co., central southern OK, (Gould, 1924).
Type locality: in southwestern part of T. 4 N., R. 5 W., Grady Co., central southern OK (Davis, 1955).


AAPG geologic province:

Anadarko basin*


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 ([ ]).