Granodiorite to tonalite

Granodiorite to tonalite.
State New Hampshire
Name Granodiorite to tonalite
Geologic age Late Ordovician
Lithologic constituents
Igneous > Plutonic > Granitic > Tonalite (Pluton)granodiorite to tonalite
Igneous > Plutonic > Granitic > Granodiorite (Pluton)granodiorite to tonalite
Comments Part of the Oliverian Plutonic Suite (Late Ordovician) - Pink, weakly to moderately foliated, locally porphyritic biotite granitoids found in mantled gneiss domes. Mafic varieties contain hornblends. Variably metamorphosed up to amphibolite facies.
NGMDB product
Counties Grafton - Sullivan