Metanorthosite and anorthositic gneiss

Mafic mineral percentage contoured in northwestern Marcy massif (St. Regis Quadrangle); contour value shown on high side of countoue line. See also Yach, Yack, Yamu.
State New York
Name Metanorthosite and anorthositic gneiss
Geologic age Middle Proterozoic
Lithologic constituents
Major
Metamorphic > Metaigneous > Metaintrusive > MetaanorthositeMetanorthosite
Metamorphic > Gneissanorthositic gneiss
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.

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Counties Clinton - Essex - Franklin - Hamilton - Jefferson - Lewis - Saint Lawrence - Warren