Two-mica tonalite

Similar to Concord Granite; found in south-central New Hampshire.
State New Hampshire
Name Two-mica tonalite
Geologic age Early - Late Devonian
Lithologic constituents
Igneous > Plutonic > Granitic > Tonalite (Pluton)two-mica tonalite - similar to Concord Granite
Comments Part of the New Hampshire Plutonic Suite (Late to Early Devonian) - Includes synkinematic and postkinematic granitoids related to the Acadian orogeny. Ages range from 410 to 365 Ma.
NGMDB product
Counties Merrimack