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Basaltic and andesitic breccia

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Exposed in northeastern Wisconsin
State Wisconsin
Name Basaltic and andesitic breccia
Geologic age Early Proterozoic
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic-volcanic breccia)basaltic and andesitic breccia
Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic-volcanic breccia)basaltic and andesitic breccia
Comments Pembine-Wausau terrane
References

Sims, P.K., 1992, Geologic map of Precambrian rocks, southern Lake Superior region, Wisconsin and northern Michigan: U.S. Geological Survey Miscellaneous Investigations Map I-2185, scale 1:500,000.

https://pubs.er.usgs.gov/publication/i2185
NGMDB product
Counties Marinette