Poughquag Quartzite (NYCApg;3)

State	New York
Name	Poughquag Quartzite
Geologic age	Cambrian
Lithologic constituents	Major Metamorphic > Metasedimentary > Metaclastic > Quartzite Minor Sedimentary > Clastic > Conglomeratelocally conglomeratic
Comments	part of Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents up to 4000 ft. (1200 m). Secondary unit description from USGS Lexicon website (ref. NY046) and reference NY042: Poughquag is shown as basal formation of Wappinger Group, conformably underlying Stissing Dolomite and nonconformably overlying Precambrian basement. The Wappinger is assigned to the Sauk Sequence in this report. Age is Early Cambrian (Sanders, 1995).
References	Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250,000. Sanders, J.E., 1995, Lower Paleozoic carbonate-clast diamictites; relationship to thrust sheets that advanced across the floor of the northern Appalachian Ordovician foreland basin: Northeastern Geology and Environmental Sciences, v. 17, no.1, p. 23-45. USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/ https://ngmdb.usgs.gov/Geolex/search
NGMDB product	NGMDB product page for 98670
Counties	Dutchess - Orange - Putnam - Rockland - Westchester

State

New York

Name

Poughquag Quartzite

Geologic age

Cambrian

Lithologic constituents

Major

Metamorphic > Metasedimentary > Metaclastic > Quartzite

Minor

Sedimentary > Clastic > Conglomeratelocally conglomeratic

Comments

part of Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents up to 4000 ft. (1200 m). Secondary unit description from USGS Lexicon website (ref. NY046) and reference NY042: Poughquag is shown as basal formation of Wappinger Group, conformably underlying Stissing Dolomite and nonconformably overlying Precambrian basement. The Wappinger is assigned to the Sauk Sequence in this report. Age is Early Cambrian (Sanders, 1995).

References

Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250,000.

Sanders, J.E., 1995, Lower Paleozoic carbonate-clast diamictites; relationship to thrust sheets that advanced across the floor of the northern Appalachian Ordovician foreland basin: Northeastern Geology and Environmental Sciences, v. 17, no.1, p. 23-45.

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search

NGMDB product

NGMDB product page for 98670

Counties

Dutchess - Orange - Putnam - Rockland - Westchester