Cram Hill Formation - Umbrella Hill Conglomerate member

Quartz-pebble and phyllitic-fragment conglomerate, and tan to gray phyllite. Occurs as lenses, locally unconformable with the underlying Stowe Formation at Umbrella Hill; occurs at different stratigraphic levels in the Cram Hill Formation north of Albany. Interbedded with Coburn Hill Metabasalt Member (Ochcv) and phyllite-chip conglomerate and slate conglomerate member (Ochsb) north of Albany. 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 - Umbrella Hill Conglomerate member
Geologic age Middle? and Early Ordovician
Lithologic constituents
Metamorphic > Metasedimentary > Metaclastic > PhylliteTan to gray phyllite.
Sedimentary > Clastic > ConglomerateQuartz-pebble and phyllitic-fragment conglomerate
NGMDB product
Counties Lamoille - Orleans