East Barre plutons

Gray, homogeneous, fine- to medium-grained muscovite-biotite granodiorite. U-Pb zircon Sensitive High Resolution Ion Microprobe (SHRIMP) age of 368±4 Ma, no. 47 (Aleinikoff and others, 2011). Part of other plutons of the New Hampshire Plutonic Suite.
State Vermont
Name East Barre plutons
Geologic age Devonian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GranodioriteGray, homogeneous, fine- to medium-grained muscovite-biotite granodiorite.
References
NGMDB product
Counties Orange - Washington