Usage:
Demetrie Volcanics (AZ*)
Geologic age:
Late Cretaceous (Campanian)*
Type section, locality, area and/or origin of name:
West of Demetrie Wash in a belt extending from NW/4 sec. 15 to SW corner sec. 21, T. 18 S., R. 12 E., Twin Buttes 15-min quadrangle, Pima Co., southern AZ (Cooper, 1971).
Named from Demetrie Wash. Present in Tascuela area, which comprises about 25 sq mi on west side of Sierrita Mountains in Palo Alto and Twin Buttes quadrangles, Pima Co., southern AZ (Thoms, 1967).
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 ([ ]).