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Wiscoy Creek - Mills-Mills - Hume Formation

Wiscoy Creek at Mills-Mills - Hume Formation

Wiscoy Creek - Mills-Mills - Hume Formation
Located in Allegany County

Image courtesy of Gerald Smith


Type: Creekside.

Features: Type localities for the Hume and Mills-Mills Formation.
Exposure top South Wales Fm. downstream; Black shale.

Feature Type: Type Section.

Reference: NYS Geological Association Field Trip Guidebook, 71st Annual Meeting 1999;
Structure and Upper Devonian Stratigraphy in the Appalachian Plateau of Allegany County,
New York State, Including the Clarendon-Linden Fault System.
For online reference please visit - www.nysga.net/Guidebooks.html

Quadrangle: Portageville.

Reason for Designation: The turbiditic sandstones of the Mills-Mills formation are representative of
similar Upper Devonian sandstones that form the Elk Group oil and gas reservoirs in NY, PA, and WV.
The black shale of the Hume Formation represent the last transgressive black shale in NYS.