Usage:
Genesee Formation (MD*,NY*,OH*,PA*,WV*)
Genesee Group (NY,PA)
Genesee Shale (VA)
Subunits:
GROUP STATUS: Geneseo Shale (NY), North Evans Limestone (NY), Penn Yan Shale (NY), Ithaca Formation (NY), Genundewa Limestone (NY), West River Shale (NY), Sherburne Formation/Siltstone (NY).
FORMATION STATUS: Geneseo Shale Member (MD*,NY*,PA*,WV*), North Evans Limestone Member (NY), Penn Yan Shale Member (NY*)/Tongue (NY), Ithaca Member (NY*), Genundewa Limestone Member (NY*), West River Shale Member (NY*,WV), Sherburne Member (NY*), Renwick Shale Member (MD*,NY*,WV*,PA*)
Geologic age:
Devonian, Middle*
Devonian, Late*
Type section, locality, area and/or origin of name:
Named from abundant exposures along Genesee River and Valley, NY, especially in gorge of River below Portage (Vanuxem, 1942). Reference section: At Beards Creek, near Leicester, western Livingston Co. (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 ([ ]).