Ordovician quartz diorite (hornblende accessory mineral)

Ordovician quartz diorite (hornblende accessory mineral)
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