Biotite quartz diorite in northeastern New Hampshire

Biotite quartz diorite in northeastern New Hampshire
State New Hampshire
Name Biotite quartz diorite in northeastern New Hampshire
Geologic age Early - Late Devonian
Lithologic constituents
Major
Igneous > Plutonic > Dioritic > Quartz-diorite (Pluton)biotite quartz diorite
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. Umbagog Granodiorite = 384+/-6 U/Pb per NH017.
References

Lyons, J.B., Bothner, W.A., Moench, R.H., and Thompson, J.B., Jr., 1997, Bedrock Geologic Map of New Hampshire: Reston, VA, U.S. Geological Survey Special Map, 2 sheets, scale 1:250,000.

https://ngmdb.usgs.gov/Prodesc/proddesc_37338.htm

Aleinikoff, J.N., and Moench, R.H., 1985, Metavolcanic stratigraphy in northern New England and U-Pb zircon chronology [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 1.

NGMDB product
Counties Coos