Usage:
Berryessa Formation (CA)
[?] Berryessa Shale (CA)
Geologic age:
Cretaceous
Type section, locality, area and/or origin of name:
Type locality: Berryessa Creek, San Jose-Mount Hamilton area, in central Coast Ranges, about 50 mi southeast of San Francisco, [Calaveras Reservoir 7.5-min quadrangle, Santa Clara Co., CA] (Crittenden, 1951).
AAPG geologic province:
California Coast Ranges 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 ([ ]).