Usage:
Clear Lake Volcanics (CA*)
Subunits:
(alphabetical) --all in CA: /Boggs Mountain Flows, Cobb Mountain Rhyolite, /Konocti Volcanics, /Perini Hill Flows.
Geologic age:
Tertiary
Quaternary
Pliocene, late* to Holocene*
Type section, locality, area and/or origin of name:
Named from volcanic rocks in Clear Lake area, Lower Lake 15-min quadrangle, Lake Co., CA (Brice, 1953).
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 ([ ]).