| State | Maine |
|---|---|
| Name | Ordovician quartz diorite (hornblende accessory mineral) |
| Geologic age | Ordovician |
| Lithologic constituents | Major
Igneous > Plutonic > Dioritic > Quartz-dioritehornblende-biotite quartz diorite; U - Unmetamorphosed
|
| Comments | U - Unmetamorphosed |
| Stratigraphic units | includes: 9 - Rockabema pluton. |
| 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 |