Usage:
No current usage.
(†Cottonwood Formation of Council Grove Group (KS) replaced with Cottonwood Limestone and Florena Shale Member of †Garrison Formation [now Beattie Limestone]. See Cottonwood and Florena.)
Geologic age:
early Permian (Wolfcampian)
Type section, locality, area and/or origin of name:
Named from Cottonwood Valley, Chase and Lyon Cos., eastern KS (Prosser, 1894).
AAPG geologic province:
Forest City basin
Nemaha anticline
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 ([ ]).