Mesoperthitic biotite granite

Pink Conway-type granite of Kingsley (1931).
State New Hampshire
Name Mesoperthitic biotite granite
Geologic age Early Cretaceous
Lithologic constituents
Igneous > Plutonic > Granitic > Granite (Pluton)mesoperthitic biotite granite
Comments Part of the New England-Quebec 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). Ossipee Mountain Complex of Kingsley (1931) = 122+/-2 K/Ar per NH013. White Mountain Plutoni-Volcanic Suite: Green Mountain pluton = 111+/-3 K/Ar per NH013. Merrymeeting Lake intrusive rocks = 115+/-10 Rb/Sr per NH022. 117+/-5 K/Ar per NH013.

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.

Kingsley, Louise, 1931, Cauldron subsidence of the Ossipee Mountains: American Journal of Science, v. 12, p. 134-167.

Foland, K.A., and Faul, Henry, 1977, Ages of the White Mountain intrusives, New Hampshire, Vermont and Maine, U.S.A.: American Journal of Science, v. 277, p. 888-904.

Foland, K.A., Quinn, A.W., and Giletti, B.J., 1971, K-Ar and Rb-Sr Jurassic and Cretaceous ages for intrusives of the White Mountain magma series, northern New England: American Journal of Science, v. 270, p. 321-330.

NGMDB product
Counties Belknap - Carroll - Rockingham - Strafford