Usage:
No current usage.
(†Sanborn Group (KS*) or †Sanborn Formation (KS) considered abandoned.)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Named from town of Sanborn, Dundy Co., NE, which is nearest town to a locality of the formation in northwest corner of Cheyenne Co., KS. Is exposed in steep bluffs of numerous canyons on south side of Arikaree River (Elias, 1931).
Type area: exposures in canyons extending from the NW/4 sec. 20, T. 1 S., R. 41 W., into the adjacent SW/4 SE/4 sec. 17, T. 1 S., R. 41 W., Cheyenne Co., KS (Frye and Fent, 1947, p. 41).
Type section: measured in canyon on south side of Arikaree River, in SW/4 SE/4 sec. 17, T. 1 S., R. 41 W., Cheyenne Co., KS (Frye and Fent, 1947, p. 41; Frye and Leonard, 1952, p. 109).
AAPG geologic province:
Anadarko basin*
Chadron arch
Las Animas arch
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 ([ ]).