Usage:
Fourmile Limestone Member of Wreford Limestone of Chase Group (NE)
Fourmile Limestone Member of Wreford Limestone of Oscar Group (OK)
Geologic age:
Permian
Type section, locality, area and/or origin of name:
At head of a branch of Fourmile Creek, near KS-NE State line, about 10.5 mi south and 0.5 mi east of Humboldt, Richardson Co., NE. Named from Fourmile Creek in southwestern Richardson Co., NE (Condra and Upp, 1931).
AAPG geologic province:
Nemaha anticline
Forest City 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 ([ ]).