Dalton Formation - dark phyllite member

Dark-gray to gray, rusty-weathering, well-laminated tourmaline-biotite-muscovite-quartz phyllite containing thin beds of laminated quartzite. Resembles dark phyllite of the Moosalamoo Formation (CZmp), with which it is in part correlative. Unit interfingers to the north with rocks of the Tyson Formation and to the east with rocks of the Hoosac Formation. Cover rocks of the Southern Green Mountains.
State Vermont
Name Dalton Formation - dark phyllite member
Geologic age Lower Cambrian and Neoproterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > PhylliteDark-gray to gray, rusty-weathering, well-laminated tourmaline-biotite-muscovite-quartz phyllite.
Minor
Metamorphic > Metasedimentary > Metaclastic > QuartziteThin beds of laminated quartzite.
References
NGMDB product
Counties Bennington - Rutland