Usage:
Sierra Springs Tuff Member of Pinto Peak Rhyolite (NV*)
Geologic age:
Tertiary
Oligocene*
Type section, locality, area and/or origin of name:
Type section: Ratto Canyon, in sec. 2, T. 17 N., R. 53 E., about 3.2 km southeast of upper Sierra Spring, Eureka Co., NV (Nolan and others, 1974).
AAPG geologic province:
Great Basin 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 ([ ]).