Ottauquechee Formation - carbonaceous phyllite member

Predominantly dark-gray to black, carbonaceous to highly graphitic, fine-grained sulfidic biotite-muscovite-quartz phyllite having silicic laminae. Includes black quartzites not mapped separately. Rocks of the Rowe-Hawley Zone. Allochthonous cover sequence east of the Green Mountains: rift and drift stage metasedimentary and metavolcanic rocks and tectonic inclusions of ultramafic rocks.
State Vermont
Name Ottauquechee Formation - carbonaceous phyllite member
Geologic age Cambrian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > PhyllitePredominantly dark-gray to black, carbonaceous to highly graphitic, fine-grained sulfidic biotite-muscovite-quartz phyllite having silicic laminae.
Minor
Metamorphic > Metasedimentary > Metaclastic > QuartziteIncludes black quartzites not mapped separately.
References
NGMDB product
Counties Addison - Chittenden - Franklin - Lamoille - Orange - Orleans - Rutland - Washington - Windham - Windsor