Usage:
Kelsey Tuff Member of Kelseyville Formation (CA*)
Geologic age:
Quaternary
Pleistocene*
Type section, locality, area and/or origin of name:
Type section: roadcut along Highway 29, 3.4 km south-southeast of Kelseyville, in SE/4 NE/4 sec. 26, T. 13 N., R. 9 W., Kelseyville 7.5-min quadrangle, Lake Co., CA (Rymer, 1981).
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 ([ ]).