No current usage.
(†Buckeye Shale of Sumner Group (KS) or †Buckeye Shale Member of Wellington Formation of Sumner Group (KS) considered obsolete.)
early Permian (Leonardian)
Occurs in northeastern KS. Origin of name not stated (Moore, 1936).
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 ([ ]).