Hoosac Formation

Rusty, gray, quartz-albite-mica (-chlorite) schist and gneiss. Locally conglomeratic.
State Massachusetts
Name Hoosac Formation
Geologic age Lower Cambrian and Proterozoic Z
Lithologic constituents
Major
Metamorphic > SchistRusty, gray, quartz-albite-mica (-chlorite) schist and gneiss. Locally conglomeratic.
Metamorphic > GneissRusty, gray, quartz-albite-mica (-chlorite) schist and gneiss. Locally conglomeratic.
Comments Part of Taconic-Berkshire Zone (Ordovician and Older Rocks); east of Berkshire Highlands
References
NGMDB product
Counties Franklin