U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Martinez

Usage:

No current usage?
(†/Martinez Marine Member of Martinez Group [Martinez Formation] (CA) considered abandoned? Uncertain if used by the CA Geol. Survey. Not used by the USGS.)


Geologic age:

Tertiary
Paleocene, late


Type section, locality, area and/or origin of name:

Not synopsized to date. Occurs south of Simi Valley, Ventura Co., CA (Nelson, 1925).


AAPG geologic province:

Transverse 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 ([ ]).