Usage:
Chickasha Formation of El Reno Group (OK*)
[?] Chickasha Tongue of Flower-pot Shale of El Reno Group (OK)
Geologic age:
early Permian (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 published by U.S. Geological Survey authors.
"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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).