Usage:
Weskan Member of Pierre Shale (KS*)
Weskan Shale Member of Pierre Shale of Montana Group (KS)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Type locality: 5 mi north of town of Weskan, [Weskan 15-min quadrangle], Wallace Co., northwestern KS. Type locality of "Upper Weskan" is on a small creek north of Swisegood ranch, in SE/4 sec. 2, T. 13 S., R. 42 W., and best exposure of "Lower Weskan" is on south side of Goose Creek, in SW/4 sec. 4, T. 13 S., R. 40 W., [Weskan 15-min quadrangle] (Elias, 1931).
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 ([ ]).