Usage:
Cashaqua Shale Member of Sonyea Formation (MD*,NY*,OH*,PA*,WV*)
Cashaqua Member of Sonyea Formation (PA)
Cashaqua Shale of Sonyea Group (NY)
Geologic age:
Late Devonian*
Type section, locality, area and/or origin of name:
Exposures on Cashaqua Creek above junction with Genesee Valley Canal, Livingston Co., west-central NY (Hall, 1840).
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 ([ ]).