Skunnemunk Conglomerate

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Skunnemunk Conglomerate

Stratigraphic range: Middle Devonian
Schunemunk conglomerate and pine.jpg
Conglomerate rock typical of Schunemunk Mountain, New York.
Type Geological formation
Unit of Green Pond Outlier
Overlies Bellvale Sandstone
ThicknessAbout 3,000 ft. [1]
Lithology
Primary Conglomerate, Sandstone
Location
ExtentNew Jersey, New York

The Skunnemunk Conglomerate (also spelled Schunemunk) is a mapped bedrock unit in New Jersey and New York from the Middle Devonian period. [1] It forms the resistant ridge of Schunemunk Mountain in New York and Bearfort Mountain in New Jersey. [2]

Description

The Skunnemunk is a Middle Devonian, grayish-purple to grayish-red, thin to very thick-bedded, locally cross–bedded, conglomerate and sandstone containing clasts of white vein quartz, red and green quartzite and sandstone, red and gray chert, and red shale. [1] It is a classic Puddingstone. Pieces of the conglomerate are easy to recognize and have been found in glacial deposits throughout the lower Hudson Valley region. [2]

References

  1. 1 2 3 Volkert, Richard A. "OFM 104, Bedrock Geologic Map of the Wawayanda Quadrangle and the New Jersey Part of the Pine Island Quadrangle, Sussex and Passaic Counties, New Jersey and Orange County, New York" (PDF). New Jersey Geological and Water Survey.
  2. 1 2 "The Green Pond Outlier". U.S. Geological Survey.
Rock Strata.jpg

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