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National Geologic Map Database

Geologic Unit: Esopus

Usage:

Esopus Formation (NY*,PA*)
Esopus Formation of Stone Ridge Group (NJ,NY)
Esopus Shale (NJ*,NY*,PA*)
Esopus Shale of Tristates Group (NY)
Esopus Siltstone (NJ*,NY*)


Subunits:

Highland Mills, Mountainville, Quarry Hill, Woodbury Creek Members (NJ,NY)


Geologic age:

Early Devonian*


Type section, locality, area and/or origin of name:

Esopus and Esopus Creek, Ulster Co., NY (Darton, 1894).


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).