Usage:
Ruby Star Granodiorite (AZ*)
Geologic age:
Tertiary*
Paleocene*
Type section, locality, area and/or origin of name:
Type area: in parts of T. 17 and 18 S., R. 12 and 13 E., Pima mining district, Sierrita Mountains, Pima Co., AZ. Named from Ruby Star Ranch (Lovering and others, 1970).
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 ([ ]).