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National Geologic Map Database

Geologic Unit: Carlton

Usage:

Carlton Rhyolite (OK)
Carlton Group (OK)
/Carlton Rhyolite Group (OK)
Called Carrollton Mountain porphyry and Carlton Mountain porphyry in early reports.

[A group name combines a geographic name with the term "group," and no lithic designation is included (ACSN, 1961, 1970; NACSN, 1983, 2005).]


Subunits:

GROUP STATUS (alphabetical) --all in OK: Colbert Porphyry, Davidson Rhyolite.


Geologic age:

Middle Cambrian


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

Bally Mountain, in sec. 27, T. 6 N., R. 14 W., Bally Mountain 7.5-min quadrangle, Kiowa Co., southwestern OK (Ham and others, 1964).
Named from Carlton Mountains, Comanche Co., Wichita Mountains, southwestern OK (Bain, 1900; Gould, 1904).
Carlton (Carrollton) Mountains are now individually named hills in Fort Sill Military Reservation (see Ham and others, 1964).


AAPG geologic province:

South Oklahoma folded belt
Ouachita folded belt
Palo Duro basin
Anadarko 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 ([ ]).