Devonian tonalite (MED3;0)

State	Maine
Name	Devonian tonalite
Geologic age	Devonian
Original map label	D3
Comments	U - Unmetamorphosed
Primary rock type	tonalite
Secondary rock type
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Granitic > Tonalitebiotite tonalite 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. Lux, D.R., 1983, 40Ar - 39Ar mineral ages for several plutons from western Maine: Geol. Soc. Amer., Abs. with Prog., v. 15, p. 147. Lux, D.R., and Aleinikoff, J.N., 1985, 40Ar - 39Ar and U-Pb geochronology of the Songo pluton, western Maine: Geol. Soc. Amer., Abs. with Prog., v. 17, p. 32.
Geographic coverage	Oxford