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National Geologic Map Database

Geologic Unit: Union Valley

Usage:

Union Valley Formation (OK)
Union Valley Sandstone (OK*)
Union Valley limestone (informal) (OK-subsurface of Okfuskee Co.)

For informal usage, the rank or lithologic term should not be capitalized.


Geologic age:

Early Pennsylvanian (Morrowan)*


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

Type locality: near Union Valley Schoolhouse, Pontotoc Co., east-central OK (Hollingsworth, 1934).


AAPG geologic province:

Chautauqua platform Ouachita 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 ([ ]).