- Usage in publication:
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- Skunnemunk conglomerate
- Modifications:
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- Named
- Dominant lithology:
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- Conglomerate
- AAPG geologic province:
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- Appalachian basin
Summary:
Named the Skunnemunk conglomerate for Skunnemunk Mountain, Orange Co., NY. Unit is a conglomerate that may represent Oneonta formation or may be younger or equivalent to the coarse beds of the Chemung in southern Catskills, or may be a local feature. Thickness is 300 to 2500 feet. Overlies the Bellvale flags. The Skunnemunk is of Late Devonian age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
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- Skunnemunk Conglomerate*
- Modifications:
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- Overview
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
The Skunnemunk Conglomerate is mapped in the Green Pond Mountain region of northern NJ. Consists of grayish-purple to grayish-red, thin- to very-thick-bedded, locally cross-bedded, polymictic conglomerate and sandstone containing clasts of white vein quartz, red and green quartzite and sandstone, red and gray chert, and red shale; interbedded with medium-gray, thin-bedded sandstone and greenish-gray and grayish-red mudcracked shale. Conglomerate and sandstone matrix is primarily hematite and microcrystalline quartz. Thickness is about 915 meters. Conformably overlies the Bellvale Sandstone and is highest unit in region. The Skunnemunk is of Middle Devonian age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).