Usage:
Fossil Ridge Latite (CO*)
Geologic age:
Late Cretaceous (Maastrichtian)*
Type section, locality, area and/or origin of name:
Type area: Fossil Ridge, especially [near] head of Comanche Gulch, in secs. 28, and 33, T. 51 N., R. 3 E., Crystal Peak 7.5-min quadrangle, and on Fossil Mountain, in sec. 23, T. 51 N., R. 3 E., Fairview Peak 7.5-min quadrangle, Gunnison Co., south-central CO. Named from Fossil Ridge (DeWitt and others, 2002, USGS Geol. Inv. Ser. Map I-2738, scale 1:30,000, p. 7-10, 13, fig. 5).
AAPG geologic province:
Piceance 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 ([ ]).