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National Geologic Map Database

Geologic Unit: Blakely

Usage:

Blakely Sandstone (AR*,OK*)
Blakely Formation (AR*,OK*)


Geologic age:

Middle Ordovician (Whiterockian)*


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

Named from Blakely Mountain, Garland Co., southwestern AR, from which it is continuously exposed as far west as Womble (Miser, 1917).


AAPG geologic province:

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 ([ ]).