Hornblende-biotite quartz monzodiorite (NHJ5;0)

State	New Hampshire
Name	Hornblende-biotite quartz monzodiorite
Geologic age	Jurassic
Original map label	J5
Comments	Part of the White Mountain igneous province of McHone and Butler (1984) - Overall part of the White Mountain Plutonic-Volcanic Suite - Includes Cretaceous alkalic syenite to granitic to gabbroic plutons, minor volcanic rocks, and lamprophyre dikes of the New England-Quebec igneous province of McHone and Butler (1984); also includes Jurassic granite and syenite and less abundant quartz syenite, diorite, gabbro, nepheline syenite, and volcanic rocks of the White Mountain igneous province of McHone and Butler (1984).
Primary rock type	quartz monzodiorite
Secondary rock type	quartz monzonite
Other rock types	diorite
Lithologic constituents	Major Igneous > Plutonic > Dioritic > Monzodiorite (Pluton)hornblende-biotite quartz monzodiorite Minor Igneous > Plutonic > Syenitic > Quartz-monzonite (Pluton)composition ranges from quartz monzonite to diorite. Igneous > Plutonic > Dioritic > Diorite (Pluton)composition ranges from quartz monzonite to diorite.
Map references	Bennett, D. S, , Wittkop, C.A., and Dicken, C.L., 2006 , Bedrock Geologic Map of New Hampshire - A Digital Representation of the Lyons and others 1997 map and ancillary files: U.S. Geological Survey Data Series 215, scale 1:250,000, CD-ROM. [http://pubs.er.usgs.gov/publication/ds215]
Unit 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, 1:250,000, 2 sheets. McHone, J.G., and Butler, J.R., 1984, Mesozoic igneous provinces of New England and the opening of the North Atlantic Ocean: Geological Society of America Bulletin, v. 95, p. 757-765.
Geographic coverage	Belknap - Coos