Devonian granite (muscovite accessory mineral) (MED1(m);0)

State	Maine
Name	Devonian granite (muscovite accessory mineral)
Geologic age	Devonian
Original map label	D1(m)
Comments	U - Unmetamorphosed
Primary rock type	granite
Secondary rock type
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Granitic > Granitemuscovite-biotite granite U - Unmetamorphosed
Map references	Digital bedrock data downloaded from Maine Office of GIS in September 2005 from http://apollo.ogis.state.me.us/catalog/catalog.asp?state=2&extent=cover#bedrock Bedrock units table (publication date 11/15/2002) downloaded from same site. Permission to redistribute these data granted by Dr. Robert Marvinney, State Geologist of Maine, in September 2006. [http://apollo.ogis.state.me.us/catalog/catalog.asp?state=2&extent=cover#bedrock]
Unit references	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.
Geographic coverage	Androscoggin - Aroostook - Franklin - Hancock - Kennebec - Knox - Lincoln - Oxford - Somerset - Waldo - York