Waits River Formation - felsic volcanic member (VTDSwf;0)

Waits River Formation - felsic volcanic member

Light-gray to grayish-green, chlorite-biotite-muscovite-plagioclase-quartz schist and fragmental quartz-plagioclase granofels or metatuff. In Springfield, contains a dated metafelsite layer interpreted as a dike cutting the Standing Pond Volcanics, that yielded a U-Pb zircon TIMS age of 423±4 Ma, no. 32 (Aleinikoff and Karabinos, 1990; Hueber and others, 1990). Part of the Connecticut Valley Trough.

State	Vermont
Name	Waits River Formation - felsic volcanic member
Geologic age	Lower Devonian and Upper Silurian
Lithologic constituents	Major Metamorphic > Schist > Quartz-feldspar-schistLight-gray to grayish-green, chlorite-biotite-muscovite-plagioclase-quartz schist. Metamorphic > Granoblastic > GranofelsFragmental quartz-plagioclase granofels or metatuff. Metamorphic > Metaigneous > MetavolcanicFragmental quartz-plagioclase granofels or metatuff.
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	Windham - Windsor

Waits River Formation - felsic volcanic member

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.