Ammonoosuc Volcanics of Billings (1935) - metasiltstone and phyllite

Medium-light-bluish-gray, medium-bluish-gray, medium-dark-gray, to medium-dark-greenish-gray metasiltstone and phyllite, and medium-gray feldspathic metawacke. Purple tinge common; coticule and magnetite locally abundant. Stratified rocks of the Bronson Hill arch and Sawyer Mountain belt.
State Vermont
Name Ammonoosuc Volcanics of Billings (1935) - metasiltstone and phyllite
Geologic age Upper and Middle Ordovician
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Metasandstone > MetagraywackeMedium-gray feldspathic metawacke.
Metamorphic > Metasedimentary > Metaclastic > PhylliteMedium-light-bluish-gray, medium-bluish-gray, medium-dark-gray, to medium-dark-greenish-gray metasiltstone and phyllite.
Metamorphic > Metasedimentary > Metaclastic > MetasiltstoneMedium-light-bluish-gray, medium-bluish-gray, medium-dark-gray, to medium-dark-greenish-gray metasiltstone and phyllite.
References
NGMDB product
Counties Caledonia - Essex