Usage:
Horsetooth Member of Muddy Sandstone of Dakota Group (CO)
Geologic age:
Early Cretaceous
Type section, locality, area and/or origin of name:
Type section: roadcut 0.15 mile east of the south end of Spring Canyon Dam, in N/2 SE/4 sec. 32, T. 7 N., R. 69 W., Larimer Co., CO. Named from Horsetooth Reservoir (MacKenzie, 1965).
AAPG geologic province:
Denver basin
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 ([ ]).