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National Geologic Map Database

Geologic Unit: Cap Mountain

Usage:

Cap Mountain Limestone Member of Riley Formation of Moore Hollow Group (TX)
Cap Mountain Limestone Member of Riley Formation (TX*)
Cap Mountain Formation of Timbered Hills Group (OK)


Geologic age:

Cambrian, Middle*
Cambrian, Late*


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

Not designated. Named from Cap Mountain, Llano Co., TX (Paige, 1911).


AAPG geologic province:

Llano uplift*
South Oklahoma folded belt
Kerr basin
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 ([ ]).