Skunnemunk Conglomerate

Skunnemunk Conglomerate

Stratigraphic range: Middle Devonian
Conglomerate rock typical of Schunemunk Mountain, New York.
TypeGeological formation
Unit ofGreen Pond Outlier
OverliesBellvale Sandstone
ThicknessAbout 3,000 ft.[1]
Lithology
PrimaryConglomerate, 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. ^ a b c 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. ^ a b "The Green Pond Outlier". U.S. Geological Survey.
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