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National Geologic Map Database

Geologic Unit: Raton

Usage:

Raton Formation (CO*,NM*)


Subunits:

Coal beds in central part of field are (ascending): lower Left Fork, upper Left Fork, Cottonwood Canyon, Ancho Canyon, York Canyon, and Chimney Divide. Coal beds in eastern part of field are (ascending): Sugarite, Brown, Green, Tin Pan, and Potato Canyon.


Geologic age:

Late Cretaceous and Paleocene*


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

Type area: high mesa region btw. Trinidad, Las Animas Co., CO, and Raton, Colfax Co., NM (Lee, 1917).
Named from exposures near Raton Mesa (Hayden, 1869).


AAPG geologic province:

Las Vegas-Raton 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).