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Mineral Resources > Online Spatial Data > Geology > by state > Massachusetts

Hornblende-olivine gabbro

Hornblende-olivine gabbro - Intrudes Dl.
StateMassachusetts
NameHornblende-olivine gabbro
Geologic agePrecambrian to Paleozoic
Original map labelgb
CommentsPart of Merrimack Belt (Silurian, Devonian and Pennsylvanian Rocks) age uncertain
Primary rock typegabbro
Secondary rock type
Other rock types
Lithologic constituents
Major
Igneous > Plutonic > Gabbroic > Gabbrohornblende-olivine gabbro
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Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon at Boston College in 1998.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 coverageWorcester

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