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Diabase dikes and sills

Diabase dikes and sills.
StateMassachusetts
NameDiabase dikes and sills
Geologic ageLower Jurassic
Original map labelJd
CommentsPart of Mesozoic Basins (Jurassic and Triassic Rocks) and Milford -Dedham Zone (Tertiary and older rocks)
Primary rock typediabase
Secondary rock type
Other rock types
Lithologic constituents
Major
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Diabase)Diabase dikes and sills.
Map references
Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon at Boston College in 1998.
Unit references
Zen, E-An (ed.), Goldsmith, R. (comp.), Ratcliffe, N.M. (comp.), Robinson, P. (comp.), Stanley, R.S. (comp.), Hatch, N.L., Jr., Shride, A.F., Weed, E.G.A., Wones, D.R., 1983, Bedrock Geologic Map of Massachusetts: U.S. Geological Survey, Reston, VA, scale 1: 250,000.
Geographic coverageFranklin - Hampden - Hampshire - Middlesex - Worcester

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