Usage:
Yorba Member of Puente Formation (CA*)
Geologic age:
late Tertiary (late Miocene)*
Type section, locality, area and/or origin of name:
Named from Yorba Bridge across Santa Ana River, 2.5 mi east of Atwood, Orange Co., southern CA. Exposed in Puente Hills north of Yorba Bridge and in northwestern Santa Ana Mountains to south of bridge (Schoellhamer and others, 1954).
AAPG geologic province:
Los Angeles 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 ([ ]).