Kinsman Quartz Monzonite of Billings (1955)

Medium- to coarse-grained, potassium-feldspar-megacrystic, biotite granodiorite gneiss of the Ashuelot pluton. U-Pb zircon age of 403±2 Ma (R.D. Tucker, USGS, written commun., 2008). Part of the Bronson Hill arch intrusive rocks.
State Vermont
Name Kinsman Quartz Monzonite of Billings (1955)
Geologic age Early Devonian
Lithologic constituents
Major
Metamorphic > Metaigneous > OrthogneissMedium- to coarse-grained, potassium-feldspar-megacrystic, biotite granodiorite gneiss of the Ashuelot pluton.
References
NGMDB product