| State | Maine |
|---|---|
| Name | Ordovician Belle Lake Slate |
| Geologic age | Ordovician |
| Lithologic constituents | Major
Metamorphic > Metasedimentary > Metaclastic > Slate (Greenschist)GS - Greenschist facies; Protolith A - Pelite
|
| Comments | W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; 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. |
| NGMDB product | |
| Counties | Aroostook - Penobscot - Washington |