Potsdam Sandstone

Light-gray, tan, and dark-gray, well- bedded pebbly quartzite, crossbedded vitreous quartzite, and local conglomerate. Part of the Beekmantown Group. Rocks of the Laurentian Margin. Part of the Adirondack lowlands and Lake Champlain lowlands (west of the Orwell and Champlain thrusts).
State Vermont
Name Potsdam Sandstone
Geologic age Upper Cambrian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > QuartziteLight-gray, tan, and dark-gray, well- bedded pebbly quartzite, crossbedded vitreous quartzite.
Minor
Sedimentary > Clastic > ConglomerateLocal conglomerate.
References
NGMDB product
Counties Addison - Rutland