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 published by U.S. Geological Survey authors.
"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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).