Usage:
Bloomer Hill Formation (CA*)
Geologic age:
Jurassic*
Type section, locality, area and/or origin of name:
Type section: west-southwest section across Bloomer Hill, in sec. 30, T. 21 N., R. 5 E., continuing into sec. 25 and 26, T. 21 N., R. 4 E., and in secs. 29 and 28, T. 21 N., R. 5 E., Berry Creek 15-min quadrangle, Butte Co., CA (Hietanen, 1977).
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 ([ ]).