Usage:
Atchison Formation (KS*,NE*)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Named from exposures in the vicinity of Atchison, Atchison Co., northeastern KS. Not recognized beyond the limits of Kansan glaciation (Moore and others, 1951).
Type locality: exposures in creek bank, in SE/4 SW/4 sec. 2, T. 6 S., R. 20 E., Atchison Co., northeastern KS (Frye and Leonard, 1952).
AAPG geologic province:
Anadarko basin*
Forest City 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 ([ ]).