Usage:
Texas Canyon Quartz Monzonite (AZ*)
Geologic age:
Tertiary, early*
Eocene, early*
Type section, locality, area and/or origin of name:
[Not designated.] Forms much of eastern half of Little Dragoon Mountains. Named from exposures in Texas Canyon through which Highway 86 [now I-10] passes, in T. 16 S., R. 22 E., Dragoon quadrangle, Cochise Co., southeastern AZ (Cooper and Silver, 1964).
AAPG geologic province:
Pedregosa basin*
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 ([ ]).