Usage:
Cressman's Gulch Formation (CO)
Subunits:
Chase Ranch Quartzite Member (CO).
Geologic age:
Paleoproterozoic
Type section, locality, area and/or origin of name:
Type area: along mountain front in NW/4 SE/4 sec. 17, T. 3 S., R. 70 W., Golden quadrangle, Jefferson Co., CO. Named from Cressman's Gulch, Ralston Buttes quadrangle, Jefferson Co., CO (Lickus and LeRoy, 1968).
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 ([ ]).