Usage:
Oracle Granite (AZ)
Geologic age:
Mesoproterozoic
Type section, locality, area and/or origin of name:
Not designated. Exposed in Mammoth mining camp area, 3 mi southwest of village of Mammoth. Mapped area almost entirely in W/2 sec. 26 and E/2 sec. 27, T. 8 S., R. 16 E., on east flank of Black Hills. Also exposed in area of village of Oracle on northern slope of Santa Catalina Mountains, Pinal Co., southeastern AZ. Named from village of Oracle (Peterson, 1938).
AAPG geologic province:
Southwestern Basin-and-Range region
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 ([ ]).