Rawsonville trondhjemite gneiss (VTY1rt;0)

Chalky-white to light-gray-weathering, medium- to coarse-grained biotite metatrondhjemite and aplite (Y1rta). Dated sample with U-Pb zircon SHRIMP age of 1,367±16 Ma, no. 3 (Ratcliffe and others, 1991; Aleinikoff and others, 2011) from crest of Bromley Mountain; U-Pb zircon age of 1,348±3 Ma, no. 6 (Ratcliffe and others, 1991). 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	Rawsonville trondhjemite gneiss
Geologic age	Early Mesoproterozoic
Lithologic constituents	Major Metamorphic > Metasedimentary > ParagneissChalky-white to light-gray-weathering, medium- to coarse-grained biotite metatrondhjemite.
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	Bennington - Rutland - Windham - Windsor

State

Vermont

Name

Rawsonville trondhjemite gneiss

Geologic age

Early Mesoproterozoic

Lithologic constituents

Major

Metamorphic > Metasedimentary > ParagneissChalky-white to light-gray-weathering, medium- to coarse-grained biotite metatrondhjemite.

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

Bennington - Rutland - Windham - Windsor