Devonian granodiorite (MED2;0)

State	Maine
Name	Devonian granodiorite
Geologic age	Devonian
Original map label	D2
Comments	U - Unmetamorphosed
Primary rock type	granodiorite
Secondary rock type
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Granitic > Granodioritebiotite-granodiorite 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. 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., 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. Dallmeyer, R.D., van Breeman, O., 1981, Rb-Sr whole rock and 40Ar/39Ar mineral ages of the Togus and Hallowell quartz monzonite and the Three Mile Pond granodiorite plutons, south-central Maine: their bearing on post-Acadian cooling history: Contrib. Mineral. Petrol., v. 78, p. 61-73.
Geographic coverage	Androscoggin - Kennebec - Oxford - Sagadahoc - Somerset - York