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National Geologic Map Database

Geologic Unit: Cashaqua

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 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 ([ ]).