Usage:
Watsons Creek Basalt (CA-recognized locally in Lake Tahoe area)
(Not used by the USGS.)
Geologic age:
Tertiary
Pliocene
Type section, locality, area and/or origin of name:
Not stated. Sample collected one-eighth mi north of Watsons Creek on west side of Highway 28 at north end of Lake Tahoe, Tahoe quadrangle, eastern CA.
AAPG geologic province:
Sierra Nevada 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 ([ ]).