Usage:
Sweetwater Formation (CA)
Geologic age:
late Tertiary (Miocene)
Type section, locality, area and/or origin of name:
Type section: 0.5 mi west of junction of Sweetwater Valley Road and South Bay Freeway, Lat. 32 deg. 42 min. 03 sec. N., Long. 117 deg. 58 min. 39 sec. W., southwestern San Diego Co., CA (Scheidemann and Kuper, 1979).
AAPG geologic province:
Peninsular 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 ([ ]).