Lower slice of Canaan Mountain Schist

Dark-gray, rusty-weathering, coarse-grained, well-foliated and moderately well layered schist composed of quartz, plagioclase, biotite, muscovite, and generally garnet and sillimanite (or minor staurolite). Amphibolite layers rather rare.
State Connecticut
Name Lower slice of Canaan Mountain Schist
Geologic age Cambrian?
Lithologic constituents
Major
Metamorphic > SchistDark-gray, rusty-weathering, coarse-grained, well-foliated and moderately well layered schist composed of quartz, plagioclase, biotite, muscovite, and generally garnet and sillimanite (or minor staurolite).
Minor
Metamorphic > Amphibolite
Comments Part of Western Uplands; Proto-North American (Continental) Terrance - Displaced Iapetus Terrane
References

Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000.

NGMDB product
Counties Litchfield