Cloud Chief Formation (OK*,TX*)
[?] Cloud Chief Formation of Foss Group (OK)
(alphabetical) --all in OK: Big Basin Member, Day Creek Dolomite Member*, Kiger Shale Member, Moccasin Creek Gypsum Member*.
Middle Permian (Guadalupian)*
Typically exposed near town of Cloud Chief in eastern Washita Co., central western OK (Gould, 1924).
Palo Duro 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 ([ ]).