Aziscohos Formation, Upper unnamed member

Gray metapelite containing sparse siltstone laminations and abundant lenses of vein quartz.
State New Hampshire
Name Aziscohos Formation, Upper unnamed member
Geologic age Upper Cambrian? - Lower Ordovician?
Lithologic constituents
Major
Metamorphic > Schist > Pelitic-schistGray metapelite containing sparse siltstone laminations and abundant lenses of vein quartz.
Incidental
Sedimentary > Clastic > SiltstoneGray metapelite containing sparse siltstone laminations and abundant lenses of vein quartz.
Comments Part of the Central Maine Composite Terrane (Central Maine Trough) - Variably metamorphosed sedimentary and volcanic rocks of greenschist to granulite facies, locally migmatized. Area includes structural belts between the Monroe fault on the west and the Campbell Hill fault on the east; that is, the Bronson Hill anticlinorium, Piedmont allochthon, Kearsarge-central Maine synclinorium, central New Hampshire anticlinorium, and Rochester-Lebanon (Maine) antiformal synclinorium.
References
NGMDB product
Counties Coos