Devonian granite-granodiorite (hornblende accessory mineral)

Devonian granite-granodiorite (hornblende accessory mineral)
State Maine
Name Devonian granite-granodiorite (hornblende accessory mineral)
Geologic age Devonian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granitehornblende-biotite granite; U - Unmetamorphosed
Igneous > Plutonic > Granitic > Granodioritehornblende-biotite granodiorite; U - Unmetamorphosed
Comments U - Unmetamorphosed
Stratigraphic units includes: 68 - Hartland pluton (ME108, ME079, ME089).
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.

Dallmeyer, R.D., van Breeman, O., and Whitney, J.A., 1982, Rb-Sr whole rock and 40Ar/39Ar mineral ages of the Hartland stock, south-central Maine: a post-Acadian representative of the New Hampshire Plutonic Series: Am. Jour. Sci., v. 287, p. 79-93.

NGMDB product
Counties Somerset