| State | Maine |
|---|---|
| Name | Undifferentiated mafic to felsic volcanic rocks |
| Geologic age | Devonian - Ordovician |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanicGS - Greenschist facies; W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith W - mafic to felsic volcanic rocks
Igneous > Volcanic > Felsic-volcanicGS - Greenschist facies; W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith W - mafic to felsic volcanic rocks
|
| Comments | GS - Greenschist facies; AA - Low rank amphibolite facies; Protolith I - Conglomerate |
| 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 | Hancock - Piscataquis |