Usage:
Borrego Formation (CA*)
Geologic age:
late Tertiary to Quaternary (Pliocene to Pleistocene)*
Type section, locality, area and/or origin of name:
Type section: in Borrego Badlands, San Diego Co., Imperial Valley region, southern CA (Dibblee, 1954; name credited to Tarbet and Holman [abs.], 1944).
AAPG geologic province:
Salton 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 ([ ]).