Frontenac Formation, Metabasalt interbeds

Metabasalt interbeds.
State New Hampshire
Name Frontenac Formation, Metabasalt interbeds
Geologic age Silurian?
Lithologic constituents
Major
Metamorphic > Metaigneous > Metavolcanic > Metabasaltmetabasalt interbeds
Comments Part of the Grenville Terrane (Connecticut Valley Trough).
References
NGMDB product
Counties Coos