Usage:
San Diego Formation (CA*)
Geologic age:
late Tertiary (late Pliocene to early Pleistocene; Blancan NALMA)*
Type section, locality, area and/or origin of name:
Notable exposures in immediate environs of city of San Diego, San Diego Co., southern CA (Dall, 1898; Ellis, 1919).
[Some geologists consider type section to be Pacific Beach, San Diego Co., southern CA (see Arnold, 1906, USGS Prof. Paper 47; Demere, 1983).]
AAPG geologic province:
Capistrano 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 ([ ]).