Graptoliferous slate

Black slate of Climacograptus bicornis Biozone on and west of Whipstock Hill, otherwise typical of slates of the Walloomsac Formation shown as Ow. Part of the Taconic Allochthon.
State Vermont
Name Graptoliferous slate
Geologic age Upper Ordovician
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > SlateBlack slate of Climacograptus bicornis Biozone; graptoliferous slate.
References
NGMDB product
Counties Bennington