Usage:
Clay Creek Limestone Member of Kanwaka Shale of Shawnee Group (IA,KS*,NE)
Clay Creek Limestone Member of Kanwaka Formation of Shawnee Group (MO)
Geologic age:
Late Pennsylvanian (Virgilian)*
Type section, locality, area and/or origin of name:
Type locality: Clay Creek, approx. 1 mi west of Atchison, Atchison Co., northeastern KS. Persistent as far southward as Osage Co., KS (Moore, 1936).
AAPG geologic province:
Forest City basin*
Nemaha anticline
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 ([ ]).