Eagle Bridge Quartzite

Dull-gray, pitted, and bluish-gray dolomitic quartz wacke and quartzite distinguished by small pebbles and grains of dark-blue to black quartz, dacitic rock fragments, and abundant plagioclase. Beds resembling the Eagle Bridge Quartzite may occur at several stratigraphic positions within the black slate and gray phyllite of the West Castleton and Hatch Hill(?) Formations, undifferentiated (Cwcu), and near the base of the Poultney Formation, and probably are not all correlative. Rocks of the Giddings Brook, Sunset Lake, and Bird Mountain slices. Part of the Taconic Allochthon.
State Vermont
Name Eagle Bridge Quartzite
Geologic age Lower Cambrian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > QuartziteQuartzite distinguished by small pebbles and grains of dark-blue to black quartz, dacitic rock fragments, and abundant plagioclase.
Sedimentary > Clastic > Sandstone > GraywackeDull-gray, pitted, and bluish-gray dolomitic quartz wacke; distinguished by small pebbles and grains of dark-blue to black quartz, dacitic rock fragments, and abundant plagioclase.
References
NGMDB product
Counties Addison - Rutland