Hazens Notch Formation, Greenstone and Amphibolite (VTCAhg;0)

State	Vermont
Name	Hazens Notch Formation, Greenstone and Amphibolite
Geologic age	Cambrian
Original map label	Chg
Comments	Part of Green Mountains, Camels Hump Group The age of the Hazens Notch Formation is changed from Cambrian to Late Proterozoic and Cambrian based on reevaluation of stratigraphy and structure (O'Loughlin and Stanely, 1986) per VT022.
Primary rock type	greenstone
Secondary rock type	amphibolite
Other rock types
Lithologic constituents	Major Metamorphic > Metaigneous > Greenstonechiefly albite-actinolite-chlorite-epidote greenstone Minor Metamorphic > Amphibolitelocally hornblende-epidote-chlorite-albite amphibolite
Map references	Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272. [http://pubs.er.usgs.gov/publication/ofr20061272]
Unit references	Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000. O'Loughlin, S.B. and Stanely, R.S., 1986, Bedrock geology of the Mount Abraham-Lincoln Gap area, central Vermont: Vermont Geological Survey Special Bulletin, no. 6, 29 p., (incl. geologic map, scale 1:12,000).
Geographic coverage	Addison - Franklin - Lamoille - Orleans - Washington