White to gray and black-spotted muscovite-biotite granite and granodiorite

Intruded near or along thrust faults. Intrudes CAZh and Proterozoic Y gneisses.
State Massachusetts
Name White to gray and black-spotted muscovite-biotite granite and granodiorite
Geologic age Ordovician
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granodioritemuscovite-biotite granite and granodiorite
Igneous > Plutonic > Granitic > Granitemuscovite-biotite granite and granodiorite
Comments Part of Taconic-Berkshire Zone (Ordovician and Older Rocks)
References
NGMDB product
Counties Berkshire - Hampden - Hampshire