| State | Maine |
|---|---|
| Name | Silurian Quoddy Formation, mafic to felsic volcanic rock member |
| Geologic age | Silurian |
| Lithologic constituents | Major
Igneous > Volcanic > Felsic-volcanicGS - Greenschist facies; Protolith W - mafic to felsic volcanic rock
Igneous > Volcanic > Mafic-volcanicGS - Greenschist facies; Protolith W - mafic to felsic volcanic rock
|
| Comments | W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith Q - Interbedded pelite and 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 | Washington |