Usage:
Vanhem Formation (KS-recognized locally in Clark and Meade Cos.)
Geologic age:
Quaternary (late Pleistocene; Wisconsinan Glacial Age; Rancholabrean NALMA)*
Type section, locality, area and/or origin of name:
Type locality: in N/2 sec. 13 and S/2 sec. 12, T. 30 S., R. 23 W., Pyle Ranch (Stephenson Ranch) on north side of Bluff Creek, Clark Co., southwestern KS (Hibbard, 1949).
Type section: along west bluff of a small tributary of Bluff Creek, in secs. 12 and 13, T. 30 S., R. 23 W., Clark Co., southwestern KS (Smith's 1940 typical section of Kingsdown); in sec. 13, T. 30 S., R. 23 W., Clark Co., southwestern KS (modifed after Smith, 1940, p. 112) (Hibbard, 1949).
Named from Vanhem Post Office in N/2 sec. 13, T. 30 S., R. 23 W., Clark Co., southwestern KS (Hibbard, 1949).
AAPG geologic province:
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 ([ ]).