Cram Hill Formation - gray quartz schist member

Rusty-grayish-brown-weathering, locally splintery-fractured, dark-gray to steel-gray biotite-quartz-feldspathic schist and quartzite and interbedded carbonaceous, small-garnet papery muscovite phyllite and schist similar to Ochs. Part of the metasedimentary host rocks of the North River Igneous Suite. Cram Hill Formation: western part of the Cram Hill Formation is in part correlative with Whetstone Hill Member of the Moretown Formation. 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 - gray quartz schist member
Geologic age Middle? and Early Ordovician
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Metamorphic > Metasedimentary > Metaclastic > PhylliteInterbedded carbonaceous, small-garnet papery muscovite phyllite and schist similar to Ochs.
Metamorphic > Schist > Quartz-feldspar-schistRusty-grayish-brown-weathering, locally splintery-fractured, dark-gray to steel-gray biotite-quartz-feldspathic schist.
References
NGMDB product
Counties Orleans - Windham - Windsor