Usage:
Boulder Creek Granodiorite of Routt Plutonic Suite (CO*)
Boulder Creek Granite of Routt Plutonic Suite (CO*)
Boulder Creek Granite Gneiss (CO)
Boulder Creek Complex (CO)
Geologic age:
Paleoproterozoic*
Type section, locality, area and/or origin of name:
Crops out widely on Boulder Creek, on east flank of Front Range, west and southwest of Boulder, [Boulder Co.], central northern CO (Boos and Boos, 1934).
AAPG geologic province:
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 ([ ]).