Diabase dikes and sills

Diabase dikes and sills.
State Massachusetts
Name Diabase dikes and sills
Geologic age Lower Jurassic
Lithologic constituents
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Diabase)Diabase dikes and sills.
Comments Part of Mesozoic Basins (Jurassic and Triassic Rocks) and Milford -Dedham Zone (Tertiary and older rocks)
NGMDB product
Counties Franklin - Hampden - Hampshire - Middlesex - Worcester