Devonian granite (muscovite accessory mineral)

Muscovite-biotite granite undivided
State Maine
Name Devonian granite (muscovite accessory mineral)
Geologic age Devonian
Lithologic constituents
Igneous > Plutonic > Granitic > Granitemuscovite-biotite granite; U - Unmetamorphosed
Comments U - Unmetamorphosed
Stratigraphic units includes plutons: 34 - Lexington (ME095, ME096); 59 - Webhannet (ME105, ME089); 63 - Leeds; 65 - North Jay (ME089); 67 - Old Point; 75 - Waldoboro (ME089); 77 - Wallamatogus (ME111, ME079); 99 - Long Island; 100 - Blue Hill (ME111, ME079); 102 - Sedgwick (ME111); 108 - Spruce Head (ME089).

Osberg, P.H., Hussey, A.M., and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Dept. of Conserv., scale 1:500,000.

Faul, H., Stern, T.W., Thomas, H.H., and Elmore, P.L.D., 1963, Ages of intrusion and metamorphism in the northern Appalachians: Am. Jour. Sci., v. 261, 9. 1-19.

Zartman, R.E., Hurley, P.M., Kruger, H.W., and Giletti, B.J., 1970, A Permian disturbance of K-Ar radiometric ages in New England: its occurrence and causes: Geol. Soc. Amer., Bull., v. 81, p. 3359-3374.

Gaudette, H.E., and Boone, G.M., 1985, Isotopic age of the Lexington batholith: constraints on timing of intrusion and Acadian metamorphism in western Maine: Geol. Soc. Amer., Abs. with Prog, v. 17, p. 19-20.

Naylor, R.S., 1973, Age of the Lexington batholith, Maine: Geol. Soc. Amer., Abs. with Prog., v. 5, p. 200.

Gaudette, H.E., Kovach, A., and Hussey, A.M., II, 1982, Ages of some intrusive rocks of southwestern Maine: Can. Jour. Earth Sci., v. 19, p. 1350-1357.

Brookins, D.G., 1976, Geochronologic contributions to stratigraphic interpretation and correlation in the Penobscot Bay area, Maine: Geol. Soc. Amer., Memoir 148, p. 129-145.

NGMDB product
Counties Androscoggin - Aroostook - Franklin - Hancock - Kennebec - Knox - Lincoln - Oxford - Somerset - Waldo - York