Devonian granite (hornblende accessory mineral)

Hornblende-biotite granite undivided
State Maine
Name Devonian granite (hornblende accessory mineral)
Geologic age Devonian
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granitehornblende-biotite granite; U - Unmetamorphosed
Comments Devonian biotite granite undivided; U - Unmetamorphosed
Stratigraphic units includes plutons: 7 - Pleasant Lake (ME079, ME080), 8 - Hunt Ridge (ME079, ME080); 93 - Tunk Lake (ME117); 96 - Cadillac Mountain (ME079, ME120); 103 - Deer Isle (Oak Point phase) (ME111, ME121, ME113).
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.

Hubacher, F., and Lux, D.R., 1985, Constraints on the time of Acadian deformation based on 40Ar-39Ar isotopic ages for two granitic plutons, northeastern Maine: Geol. Soc. Amer., Abs. with prog., v. 17, p. 25.

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.

Wingard, P.S., and Brookins, D.G., 1964, Age of basic dikes on the Castine-Blue Hill peninsula, Maine: Geol. Soc. Amer., Spec. Paper 82, p. 226.

Karner, F.R., pers. communication, in Brookins, 1976.

Metzger, W.J., and Bickford, M.E., 1972, Rb-Sr chronology and stratigraphic relations of Silurian rocks, Mt. Desert Island, Maine: Geol. Soc. Amer., Bull., v. 83, p. 497-504.

Brookins, D.G., and Spooner, C.M., 1970, The isotopic ages of the Oak Point and Stonington granites, eastern Penobscot Bay, Maine: Jour. Geol., v. 78, p. 570-575.

NGMDB product
Counties Aroostook - Hancock - Washington