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Hampden Basalt

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Thin flows of quartz tholeiite, locally intimately associated with Granby Basaltic Tuff.
State Massachusetts
Name Hampden Basalt
Geologic age Lower Jurassic
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)thin flows of quartz tholeiite
Comments Part of Mesozoic Basins (Jurassic and Triassic Rocks); Sedimentary and Volcanic Rocks of Hartford Basin; Newark Supergroup.
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., and Wones, D.R., 1983, Bedrock Geologic Map of Massachusetts: U.S. Geological Survey, Reston, VA, scale 1: 250,000.

https://pubs.er.usgs.gov/publication/70046713
NGMDB product
Counties Hampden - Hampshire