Usage:
Gringo Gulch Volcanics (AZ*)
Geologic age:
Tertiary
Paleocene(?)*
Type section, locality, area and/or origin of name:
Type area: along Gringo Gulch 2 to 3 mi north-northwest of Patagonia, in E/2 W/2 sec. 25, T. 21 S., R. 15 E., Mount Wrightson quadrangle, Santa Cruz Co., AZ (Drewes, 1968).
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 ([ ]).