| State | Maine |
|---|---|
| Name | Ordovician - Cambrian Cookson Formation, mafic to felsic volcanic rocks |
| Geologic age | Ordovician - Cambrian |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanicGS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
Igneous > Volcanic > Felsic-volcanicGS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
|
| Comments | GS - Greenschist facies; Protolith C - Sulfidic/carbonaceous pelite |
| 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.Fyffe, L.R. and Riva, J., 1990, Revised stratigraphy of the Cookson Group of southwestern New Brunswick and adjacent Maine, IN Raeside R.P., and Barr, S.M., eds., New age determinations in the Atlantic provinces: Atlantic Geology, Journal of the Atlantic Geoscience Society, v. 26, no. 3, p. 271-276. |
| NGMDB product | |
| Counties | Washington |