Usage:
Crooked Creek Formation of Meade Group (KS*,OK*)
Crooked Creek Formation (KS*,OK*)
Subunits:
(alphabetical): Atwater Member (KS*), Pearlette Ash Member (KS,OK), Stump Arroyo Member (KS*).
Geologic age:
late Tertiary and Quaternary (Pliocene and Pleistocene; Blancan and Irvingtonian NALMA)*
Due to change in Plio-Pleistocene boundary, age may now be considered all or in part Pleistocene.
Type section, locality, area and/or origin of name:
Type locality: in S/2 sec. 16, W/2 sec. 15, and N/2 sec. 21, T. 33 S., R. 28 W., [approx. Lat. 37 deg. 10 min. N., Long. 100 deg. 22 min. W., Irish Flats 7.5-min quadrangle], Meade Co., southwestern KS. Named from Crooked Creek, a tributary of the Cimarron River in Meade Co., southwestern KS (Hibbard, 1949).
AAPG geologic province:
Anadarko basin*
Sedgwick 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 ([ ]).