Devonian granodiorite

Biotite granodiorite
State Maine
Name Devonian granodiorite
Geologic age Devonian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granodioritebiotite-granodiorite; U - Unmetamorphosed
Comments U - Unmetamorphosed
Stratigraphic units includes plutons: 59 - Webhannet (ME105, ME089); 71 - Three Mile Pond (ME109).
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.

NGMDB product
Counties Androscoggin - Kennebec - Oxford - Sagadahoc - Somerset - York