Hoosac Formation

Lustrous greenish-gray schist characterized by 1-1.5 cm garnets; resembles Gassetts Schist of Vermont.
State Massachusetts
Name Hoosac Formation
Geologic age Lower Cambrian and Proterozoic Z
Lithologic constituents
Major
Metamorphic > SchistLustrous greenish-gray schist characterized by 1-1.5 cm garnets.
Comments Part of Taconic-Berkshire Zone (Ordovician and Older Rocks); east of Berkshire Highlands
References
NGMDB product
Counties Berkshire - Hampshire