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National Geologic Map Database

Geologic Unit: Coon Mountain

Usage:

Coon Mountain Sandstone Member of Pueblo Formation of Cisco Group (TX*)
Coon Mountain Sandstone [unranked] in Pueblo Formation of Cisco Group (TX-local)


Geologic age:

Late Pennsylvanian (Virgilian)*


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

Named from Coon Mountain, Brown Co., Colorado River region, central TX. Best exposures from Coon Mountain southward to Gulf, Colorado and Santa Fe RR, Brown and Coleman Cos., TX (Drake, 1893; Plummer and Moore, 1922).


AAPG geologic province:

Bend arch*


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 ([ ]).