Schoharie Formation

Schoharie Formation
Schoharie Formation
Stratigraphic range: Devonian
Type	Formation
Sub-units	Gumaer Island Mbr; Aquetuck Mbr; Saugerties Mbr; Carlisle Center Mbr;
Underlies	Onondaga Limestone
Lithology
Primary	Siltstone, sandstone
Other	Limestone
Location
Region	New York, Pennsylvania, Virginia
Country	United States
Type section
Named for	Schoharie, NY

Last updated July 04, 2025

The Schoharie Formation is a Devonian formation found in outcrop in New York, New Jersey, Pennsylvania, and Virginia. Also known as the "Schoharie Grit" in central New York, due to the "gritty" consistency of the formation.^[1]

Description

The Schoharie is made up of finer grained siliciclastics and calcareous material, with the formation becoming less calcareous towards the top.^[2]

References

↑ Fisher, Donald W. (9 December 2023). "DEVONIAN STRATIGRAPHY AND PALEOECOLOGY IN THE CHERRY VALLEY, NEW YORK REGION" (PDF). Otto's Website. Retrieved 9 December 2023.
↑ Bartholomew, Alex; Ver Straeten, Charles (7 August 2023). "Lower and Middle Devonian Strata of New York State: Genesee River Valley to the Hudson Valley" (PDF). Geneseo State University of New York. Retrieved 9 December 2023.

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[1] Fisher, Donald W. (9 December 2023). "DEVONIAN STRATIGRAPHY AND PALEOECOLOGY IN THE CHERRY VALLEY, NEW YORK REGION" (PDF). Otto's Website. Retrieved 9 December 2023.

[2] Bartholomew, Alex; Ver Straeten, Charles (7 August 2023). "Lower and Middle Devonian Strata of New York State: Genesee River Valley to the Hudson Valley" (PDF). Geneseo State University of New York. Retrieved 9 December 2023.

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