Usage:
Glendora Volcanics (CA*)
Subunits:
(alphabetical) [not adopted by USGS] --all in CA: Elephant Hill Breccia Member, Johnstone Peak Tuff Breccia Member, Spadra Felsophyre Member.
Geologic age:
Tertiary
Miocene*
Type section, locality, area and/or origin of name:
Type area: vicinity of Glendora, in South Hills, and at northeast end of San Jose Hills [Glendora and San Dimas 7.5-min quadrangles] Los Angeles Co., CA (Shelton, 1946, 1955).
AAPG geologic province:
Los Angeles basin*
Transverse 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 ([ ]).