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Fitch Formation

Fitch Formation - Quartz-plagioclase-biotite granulite; actinolite-diopside granulite; impure limestone and dolomite; mica schist; the carbonate-rich beds are typically an inch or two thick and segmented so as to give the weathered outcrop a characteristic pitted appearance. (Southeastern Vermont).
State Vermont
Name Fitch Formation
Geologic age Silurian
Comments Part of Eastern Vermont
Primary rock type granulite
Secondary rock type limestone
Other rock types dolostone (dolomite); mica schist
Lithologic constituents
Major
Metamorphic > Granulitequartz-plagioclase-biotite granulite; actinolite-diopside granulite
Incidental
Metamorphic > Schist > Mica-schistmica schist
Sedimentary > Carbonate > Limestone (Bed)impure limestone and dolomite; the carbonate-rich beds are typically an inch or two thick and segmented so as to give the weathered outcrop a characteristic pitted appearance
Sedimentary > Carbonate > Dolostone (Bed)impure limestone and dolomite; the carbonate-rich beds are typically an inch or two thick and segmented so as to give the weathered outcrop a characteristic pitted appearance
Map references
Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
Unit references
Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000.
Counties Essex - Windham - Windsor