Usage:
Jaycox Shale Member of Ludlowville Formation of Hamilton Group (NY*)
Subunits:
Hills Gulch, Greens Landing, Cottage City, and Benton Run Beds (NY)
Geologic age:
Middle Devonian*
Type section, locality, area and/or origin of name:
Type section: exposures in three waterfalls and banks along south branch of Jaycox Creek, 3.2 km north-northeast of Geneseo and 400 m west of NY Route 39, Geneseo quadrangle, Livingston Co., west-central NY (Baird, 1979).
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 ([ ]).