Usage:
Sandholdt Member of Monterey Shale (CA*)
Sandholdt Shale (CA)
Geologic age:
Miocene, early*
Miocene, middle*
Type section, locality, area and/or origin of name:
Upper Reliz Canyon, in N/2 and SE/4 sec. 14, and NE/4 sec. 15, T. 20 S., R. 6 E., Junipero Serra 15-min quadrangle, Monterey Co., CA (Thorup, 1943).
AAPG geologic province:
California Coast 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 ([ ]).