U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Patterson Ranch

Usage:

No current usage.
(†Patterson Ranch Group (OK) considered abandoned. See Fernvale, Sylvan, and Viola.)


Geologic age:

Late Ordovician


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

Named from Patterson Ranch on the south edge of the Arbuckle Mountains on the east side of U.S. Highway 77. On this ranch the Viola, Fernvale. and Sylvan Formations are characteristically developed and they extend from the highway, [approx. E/2 E/2 sec. 25, T. 2 S., R. 1 E., northeastern corner Springer 7.5-min quadrangle, Carter Co.], southern OK (Decker, 1942).


AAPG geologic province:

South Oklahoma folded belt


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 ([ ]).