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National Geologic Map Database

Geologic Unit: Middle Park

Usage:

Middle Park Member of Coalmont Formation (CO*)
[?] Middle Park Formation (CO*)


Subunits:

[?] FORMATION STATUS: /Windy Gap Volcanic Member (CO*).


Geologic age:

Late Cretaceous(?) and Paleocene*


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

Occurs in Middle Park, [Grand Co.], CO (Clark, 1891).


AAPG geologic province:

North Park 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 ([ ]).