Devonian gabbro/diorite/ultramafic rocks

Devonian gabbro/diorite/ultramafic rocks
State Maine
Name Devonian gabbro/diorite/ultramafic rocks
Geologic age Devonian
Lithologic constituents
Igneous > Plutonic > Gabbroic > GabbroU - Unmetamorphosed
Igneous > Plutonic > Dioritic > DioriteU - Unmetamorphosed
Igneous > Plutonic > UltramaficU - Unmetamorphosed
Comments U - Unmetamorphosed
Stratigraphic units includes plutons: 19 - Norway Point; 29 - Flagstaff Lake Complex (ME089); 35 - Bog Brook; 71 - Three Mile Pond (ME109); 83 - St. Stephen (ME115); 106 - Isle au Haut.

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.

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.

Wanless, R.K., Stevens, R.D., Lachance, G.R., and Delabio, R.N., 1973, Age Determination and Geological Studies - K-Ar Isotopic Ages: Geol. Surv. Canada, Paper 73-2.

NGMDB product
Counties Cumberland - Franklin - Hancock - Kennebec - Knox - Lincoln - Oxford - Piscataquis - Somerset - Washington - York