| State | Maine |
|---|---|
| Name | Ordovician Kamankeag Formation, basalt and graywacke member |
| Geologic age | Ordovician |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanic > BasaltGS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; Protolith E - Feldspathic sandstone
Sedimentary > Clastic > Sandstone > Graywacke (Bed)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; Protolith E - Feldspathic sandstone
|
| Comments | Protolith K - Calcareous feldspathic sandstone. |
| 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. |
| NGMDB product | |
| Counties | Franklin - Oxford |