No current usage.
(†Spring Creek Granite (CO) abandoned.)
Mesoproterozoic
Not stated. Occurs only on southwest half of Red Mountain, and on hill to south, on opposite side of Spring Creek, Cripple Creek district, eastern CO (Cross, 1895).
Southern Rocky Mountain 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 ([ ]).