Waits River Formation - mafic member

Massive, coarse-grained hornblende-plagioclase gneiss and granofels; finely foliated hornblende-plagioclase amphibolite; actinolite-epidote-chlorite greenstone. Part of the Connecticut Valley Trough.
State Vermont
Name Waits River Formation - mafic member
Geologic age Lower Devonian and Upper Silurian
Lithologic constituents
Major
Metamorphic > Gneiss (Amphibolite)Massive, coarse-grained hornblende-plagioclase gneiss and granofels.
Metamorphic > Amphibolite (Amphibolite)Finely foliated hornblende-plagioclase amphibolite.
Metamorphic > Granoblastic > Granofels (Amphibolite)Massive, coarse-grained hornblende-plagioclase gneiss and granofels.
Minor
Metamorphic > Metaigneous > Greenstone (Amphibolite)Actinolite-epidote-chlorite greenstone.
References
NGMDB product
Counties Caledonia - Essex - Orange - Washington - Windham - Windsor