Charnockite, granitic and quartz syenite gneiss

Variably leucocratic, containing varying amounts of hornblende, pyroxenes, biotite; may contain interlayered amphibolite, metasedimentary gneiss, migmatite. Overprint signifies inequigranular texture or phacoidal structure.
State New York
Name Charnockite, granitic and quartz syenite gneiss
Geologic age Middle Proterozoic
Lithologic constituents
Metamorphic > Gneissgranitic and quartz syenite gneiss; may contain interlayered metasedimentary gneiss
Igneous > Plutonic > Charnockite
Metamorphic > Migmatite
Metamorphic > Amphibolite

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.

NGMDB product
Counties Clinton - Essex - Franklin - Hamilton - Herkimer - Jefferson - Lewis - Saint Lawrence - Warren - Washington