Usage:
Grant Shale Member of Winfield Limestone of Chase Group (KS*,NE*)
Geologic age:
early Permian (Wolfcampian)*
Type section, locality, area and/or origin of name:
Type locality: exposures between 5 and 6 mi north of Florence, Marion Co., KS. Named from Grant Twp. in Marion Co., KS (Condra and Upp, 1931).
AAPG geologic province:
Nemaha anticline*
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 ([ ]).