Usage:
Bommer Member of Topanga Formation (CA*)
Geologic age:
Miocene*
Type section, locality, area and/or origin of name:
In large fault block extending from upper Moro Canyon to mouth of Bommer Canyon, Orange Co., south-central CA. Named from Bommer Canyon, which joins Sand Canyon Wash at north margin of San Joaquin Hills (Vedder and others, 1957).
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 ([ ]).