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National Geologic Map Database

Geologic Unit: Geneseo

Usage:

Geneseo Shale Member of Genesee Formation (MD*,NY*,OH*,PA*,WV*)
Geneseo Shale of Genesee Group (NY)


Geologic age:

Devonian, Middle*
Devonian, Late*


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

Named from exposures at Fall Brook, 1.5 mi south of Geneseo, Livingston Co., NY (Chadwick, 1920).
Reference section: Menteth Gully, west side of Canandaigua Lake, 14 mi north of Naples, Ontario Co., NY (deWitt and Colton, 1959).


AAPG geologic province:

Appalachian 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 ([ ]).