Usage:
Hells Canyon Formation of Durst Group (UT)
Hells Canyon Member of Morgan Formation (CO,UT)
Geologic age:
Pennsylvanian
Type section, locality, area and/or origin of name:
West bluff of Hell's Canyon, tributary canyon of the Yampa River, in sec. 31, T. 6 N., R. 102 W., [approx. Lat. 40 deg. 25 min. 34 sec. N., Long. 108 deg. 53 min. 35 sec. W., Hells Canyon 7.5-min quadrangle], Moffat Co., northwestern CO (Thompson, 1945).
AAPG geologic province:
Green River basin
Uinta basin
Uinta uplift
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 ([ ]).