Usage:
Buttle Member of Monterey Shale (CA*)
Buttle Diatomite Member of Monterey Formation (CA)
Geologic age:
Miocene, late*
Type section, locality, area and/or origin of name:
Buttle Canyon, in NE/4 sec.15, T. 24 S., R. 10 E., Bradley 7.5-min quadrangle, Monterey Co., CA (Mandra, 1960).
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 ([ ]).