Usage:
Sierra Buttes Formation (CA*)
Geologic age:
Late Devonian*
Type section, locality, area and/or origin of name:
Type section: from southwest side of Sierra Buttes, near termination of old mining road (in SE/4 NE/4 NW/4 sec. 20, T. 20 N., R. 12 E.), to point about 150 m south of and below Sierra Buttes lookout (in SE/4 SW/4 SE/4 sec. 17, T. 20 N., R. 12 E.); upper part of section begins near Mountain Mine, in SW/4 NE/4 SE/4 sec. 16, T. 20 N., R. 12 E., Sierra City 15-min quadrangle [Sierra Co., CA] (McMath, 1966).
AAPG geologic province:
Sierra Nevada province*
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 ([ ]).