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Usage:
Mehrten Formation (CA*,NV)
Geologic age:
Pliocene*
Miocene*
Type section, locality, area and/or origin of name:
Along Clements-Camanche Road about 1.75 mi east of the Mehrten dam site, in NE/4 SW/4 sec. 5, T. 4 N., R. 9 E., San Joaquin Co., west-central CA. Named from exposures in bluffs along Mokelumne River near Mehrten dam site, which is about 3.5 mi upstream from Clements bridge (Piper and others, 1939).
AAPG geologic province:
Sacramento 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 ([ ]).