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National Geologic Map Database

Geologic Unit: Cimarron Ridge

Usage:

Cimarron Ridge Formation (CO*)


Geologic age:

Late Cretaceous (Maastrichtian)*


Type section, locality, area and/or origin of name:

Type area: along Cimarron Ridge, border of Ouray and Gunnison Cos., CO. Starts about 11 mi northeast of Ridgway, Ouray Co., CO (Dickinson and others, 1968).


AAPG geologic province:

San Juan Mountains province*
Paradox 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 ([ ]).