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Little John Road / Route 17 at White Creek

Little John Road / County Route 17 at White Creek - Transgressive lag with large quartz clasts, shell/crinoid fragments, and large red silt clasts

Little John Road/Route 17 at White Creek
Located in Allegany County
Image courtesy of Gerald Smith


Type: Roadside.

Features: Late Devonian deposition & preservation of sandstones that are the
main oil & gas reservoirs for petroleum fields in southern NY & all of PA; Faulting.

Feature Type: Structural.

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: Angelica.

Reason for Designation: The location contains many sedimentological, stratigraphical & structural features
that reflect Late Devonian deposition and preservation of sandstones that are the main oil and gas reservoirs for
Upper Devonian petroleum fields in southern New York and all of Pennsylvania. The trace fossil assemblage shows
an excellent Devonian-aged glossifungites ichnofacies.