Bondville metadacite and trondhjemite gneiss

Light-gray to whitish-gray, fine-grained biotite trondhjemitic gneiss, locally containing abundant magnetite. U-Pb zircon SHRIMP age of 1,342 Ma, no. 6B (Ratcliffe and others, 1991; Aleinikoff and others, 2011). South Londonderry Igneous Suite (Middle and Early Mesoproterozoic) (1,393±9 Ma to 1,309±6 Ma). Mount Holly Complex intrusive rocks. Rocks of the Green Mountain and Lincoln Mountain massifs and eastern domes.
State Vermont
Name Bondville metadacite and trondhjemite gneiss
Geologic age Middle Mesoproterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > ParagneissLight-gray to whitish-gray, fine-grained biotite trondhjemitic gneiss, locally containing abundant magnetite.
Metamorphic > Metaigneous > Metavolcanic > Metadacite
References
NGMDB product
Counties Bennington - Windham - Windsor