Frontenac Formation, Proximal bimodal volcanic facies

Frontenac Formation, Proximal bimodal volcanic facies.
State New Hampshire
Name Frontenac Formation, Proximal bimodal volcanic facies
Geologic age Silurian?
Lithologic constituents
Major
Metamorphic > Metaigneous > Metavolcanicproximal bimodal volcanic facies
Comments Part of the Grenville Terrane (Connecticut Valley Trough). Felsic metatuff of Frontenac Formation = 432+/-10 U/Pb per J.N. Aleinkoff, oral commun., May 3, 1985.
References
NGMDB product
Counties Coos