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National Geologic Map Database

Geologic Unit: Utica

Usage:

Utica Shale (IN*,MI*,NY*,OH*,PA*)


Subunits:

Flat Creek Member (NY) and Indian Castle Member (NY).


Geologic age:

Late Ordovician (Mohawkian; Chatfieldian)*


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

Type area: well exposed in the Starch Factory Creek to the east of Utica. Named from City of Utica, Oneida Co., NY (Ruedemann, 1912).


AAPG geologic province:

Appalachian basin*
Cincinnati arch*
Michigan 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 ([ ]).