Nepheline-sodalite-hastingsite syenite

Found at Red Hill in Mt. Chocorua quadrangle (see index accompanying ""Sources of Map Data"").
State New Hampshire
Name Nepheline-sodalite-hastingsite syenite
Geologic age Jurassic
Lithologic constituents
Igneous > Plutonic > Syenitic > Syenite (Pluton)nepheline-sodalite-hastingsite syenite
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).

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.

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.

NGMDB product
Counties Carroll