Usage:
Gabilan Mesa Quartz Diorite (CA)
Geologic age:
Cretaceous
Type section, locality, area and/or origin of name:
Not stated. Occurs in Gabilan Mesa, which covers an area of approx. 250 sq mi east of Salinas Valley, west-central CA. Oldest sedimentary rock resting in depositional contact on flanks of mesa is Miocene in age. Dated specimen collected in sec. 29, T. 17 S., R. 7 E., on road to Pinnacles National Monument, 3.2 mi east of its junction with Metz Road (Curtis and others, 1958).
AAPG geologic province:
Coastal basins
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 ([ ]).