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NGMDB

Geologic Unit: Aurora

Usage:

Aurora Siltstone Member of Orangeville Shale of Cuyahoga Group (OH*,PA*)

["Submember" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). Aurora submember considered informal and should not be capitalized.]


Geologic age:

Early Mississippian (Tournaisian; Kinderhookian)*


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

Named from exposures on Aurora Creek in northwest part of Portage Co., northeastern OH (Prosser, 1912).


AAPG geologic province:

Appalachian basin*


NGMDB

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 ([ ]).

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Page Last Modified: Fri Oct 17 13:17:07 2014