Diorite at Rowley

Dark, green-gray, medium-grained hornblende diorite.
State Massachusetts
Name Diorite at Rowley
Geologic age Proterozoic Z
Lithologic constituents
Major
Igneous > Plutonic > Dioritic > DioriteDark, green-gray, medium-grained hornblende diorite.
Comments Part of Milford-Dedham Zone (Tertiary and Older Rocks)
References
NGMDB product
Counties Essex