Usage:
Piuma Member of Sespe Formation (CA*)
Geologic age:
Tertiary
Miocene, early*
Type section, locality, area and/or origin of name:
Exposures in Piuma Road and at head of Carbon Canyon, Santa Monica Mountains, in NE/4 sec. 21, T. 1 S., R. 17 W., east-central Malibu Beach quadrangle, Los Angeles Co., CA (Yerkes and Campbell, 1979).
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 ([ ]).