| State | Maine |
|---|---|
| Name | Silurian - Precambrian Z ultramafic rocks |
| Geologic age | Silurian - Precambrian Z |
| Lithologic constituents | Major
Igneous > Plutonic > UltramaficU - Unmetamorphosed
|
| Comments | W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; Protolith A - 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. |
| NGMDB product | |
| Counties | Aroostook |