Nulhegan pluton - western zone (VTDnwz;0)

Nulhegan pluton - western zone

Light-gray to dark-gray, medium- to coarse-grained, massive, biotite-clotted, hornblende-quartz monzodiorite, minor granodiorite, and granite. Rb/Sr whole-rock age of 390±14 Ma (Ayuso and Arth, 1992). Igneous rocks of the Northeast Kingdom batholith of Ayuso and Arth (1992). Part of the New Hampshire Plutonic Suite.

State	Vermont
Name	Nulhegan pluton - western zone
Geologic age	Devonian
Lithologic constituents	Major Igneous > Plutonic > Dioritic > Quartz-monzodiorite (Pluton)Light-gray to dark-gray, medium- to coarse-grained, massive, biotite-clotted, hornblende-quartz monzodiorite. Minor Igneous > Plutonic > Granitic > Granodiorite (Pluton) Igneous > Plutonic > Granitic > Granite (Pluton)
References	Ratcliffe, N.M., Stanley, R.S., Gale., M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock geologic map of Vermont: U.S. Geological Survey Scientific Investigations Map 3184, 3 sheets, scale 1:100,000. https://pubs.er.usgs.gov/publication/sim3184
NGMDB product	NGMDB product page for 96860
Counties	Essex

Nulhegan pluton - western zone

Ratcliffe, N.M., Stanley, R.S., Gale., M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock geologic map of Vermont: U.S. Geological Survey Scientific Investigations Map 3184, 3 sheets, scale 1:100,000.