Usage:
Speiser Shale of Council Grove Group (KS*,NE*,OK)
Speiser Shale of Oscar Group (OK)
Geologic age:
early Permian (Wolfcampian)*
Type section, locality, area and/or origin of name:
Type locality: in W/2 sec. 35, T. 1 N., R. 13 E., Speiser Twp., Richardson Co., NE. Named from Speiser Twp. (Condra, 1927; Condra and Upp, 1931).
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 ([ ]).