Pinney Hollow Formation - amphibolite and greenstone member (VTCAZpha;0)

Pinney Hollow Formation - amphibolite and greenstone member

Dark-green to black plagioclase-biotite-hornblende (±quartz) amphibolite, epidote amphibolite, and ankeritic-chlorite-magnetite-plagioclase (albite) greenstone. Shows all gradations from massive but well-foliated metabasalt to well-bedded basaltic volcaniclastic rock and volcanic metawacke. Cover rocks of Green Mountain anticlinorium.

State	Vermont
Name	Pinney Hollow Formation - amphibolite and greenstone member
Geologic age	Cambrian and Neoproterozoic
Lithologic constituents	Major Metamorphic > AmphiboliteDark-green to black plagioclase-biotite-hornblende (±quartz) amphibolite, epidote amphibolite. Metamorphic > Metaigneous > GreenstoneAnkeritic-chlorite-magnetite-plagioclase (albite) greenstone.
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	Addison - Rutland - Washington - Windham - Windsor

Pinney Hollow Formation - amphibolite and greenstone 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.