Tyson Formation - quartz-pebble phyllite and wacke member

Gray to grayish-green, biotite-chlorite-quartz-pebble phyllite; albitic metawacke is similar to metawacke member of the Pinnacle Formation but more thinly bedded and contains less metawacke. Albitic biotite-(chlorite)-quartz granofels and wacke locally present. Eastern and western flank of the Green Mountain massif.
State Vermont
Name Tyson Formation - quartz-pebble phyllite and wacke member
Geologic age Lower Cambrian and Neoproterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > PhylliteGray to grayish-green, biotite-chlorite-quartz-pebble phyllite.
Metamorphic > Metasedimentary > Metaclastic > Metasandstone > MetagraywackeAlbitic metawacke is similar to metawacke member of the Pinnacle Formation but more thinly bedded and contains less metawacke. Albitic biotite-(chlorite)-quartz granofels and wacke locally present.
Minor
Metamorphic > Granoblastic > GranofelsAlbitic biotite-(chlorite)-quartz granofels locally present.
References
NGMDB product
Counties Addison - Rutland - Windsor