Usage:
No current usage.
(†/Patterson Tuff (CA) not used since its introduction, considered invalid.)
[Conflicts with several articles in nomenclature guidelines (ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Not adopted by the California Geological Survey or the USGS.]
Geologic age:
Tertiary
Type section, locality, area and/or origin of name:
[Type locality not stated. Occurs south of Patterson Lake, Warren Peak and Eagle Peak 7.5-min quadrangles, Modoc Co., northeastern CA (Hulbe, 1980).]
AAPG geologic province:
Southern Oregon basin
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 ([ ]).