Usage:
Mokelumne River Formation (CA)
Geologic age:
Late Cretaceous
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 4,364 to 5,906 ft, Brazos Oil and Gas Company [now Union Oil Company of California] S.R. Unit 1 well, in sec. 17, T. 4 N., R. 4 E., San Joaquin Co., CA (Campion, 1980).
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 ([ ]).