Cram Hill Formation - phyllite member

Gray to silvery-green, sericite-chlorite-quartz phyllite with thin beds of rusty-weathering, pearly-white, fine-grained granofels. Interlayered with Ochuc and Ochsb at the contacts. Mapped locally in the Albany area. Part of the Cram Hill Formation of the Newport Center area. Part of the metasedimentary host rocks of the North River Igneous Suite. Rocks of the Early to Late Taconic Accreted Terrane of the Rowe-Hawley Zone. Eastern allochthonous sequence, oceanic and accretionary realm, ultramafic inclusions, volcanic-arc intrusives, and volcanic rocks.
State Vermont
Name Cram Hill Formation - phyllite member
Geologic age Middle? and Early Ordovician
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > PhylliteGray to silvery-green, sericite-chlorite-quartz phyllite.
Minor
Metamorphic > Granoblastic > GranofelsThin beds of rusty-weathering, pearly-white, fine-grained granofels.
References
NGMDB product
Counties Lamoille - Orleans