Usage:
Cat Mountain Tuff (AZ*)
Cat Mountain Rhyolite (AZ)
Geologic age:
Late Cretaceous (Campanian)*
Type section, locality, area and/or origin of name:
Notable exposures on Cat Mountain and Golden Gate Mountain [Cat Mountain 7.5-min quadrangle, Pima Co., southeastern AZ]. Most conspicuous and one of the most widespread formations in Tucson Mountains, Pima Co., southeastern AZ (Brown, 1939).
AAPG geologic province:
Basin-and-Range 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 ([ ]).