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National Geologic Map Database

Geologic Unit: Fountain

Usage:

Fountain Formation (CO*,WY*)


Subunits:

Glen Eyrie Shale Member (CO*).


Geologic age:

Pennsylvanian, Early
Morrowan
Pennsylvanian, Middle*
Pennsylvanian, Late*
Permian, Early*


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

Typical development on Fountain Creek below Manitou Springs [in Colorado Springs quadrangle] and at head of same stream in northeast corner of Pikes Peak quadrangle, [El Paso Co.], eastern CO (Cross, 1894).


AAPG geologic province:

Las Animas arch*
Powder River basin*
Denver basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).