Schist of sedimentary protolith

Schist of sedimentary protolith. Metamorphosed to upper greenschist to amphibolite facies.
State Minnesota
Name Schist of sedimentary protolith
Geologic age Neoarchean
Lithologic constituents
Major
Metamorphic > Schist (Greenschist, Amphibolite)Schist of sedimentary protolith
Comments Part of the Supracrustal and hypabyssal intrusive rocks of the Wawa and Wabigoon subprovinces. Pre-D1 metavolcanic, metasedimentary, and hypabyssal intrusive rocks.
References

Jirsa, Mark A., Boerboom, Terrence J., Chandler, Val W., Mossler, John H., Runkel, Anthony C., and Setterholm, Dale R., 2011, S-21 Geologic Map of Minnesota-Bedrock Geology; Minnesota Geological Survey, State Map Series S-21. Scale 1:500,000.

NGMDB product
Counties Beltrami - Cass - Crow Wing - Douglas - Grant - Koochiching - Lake of the Woods - Norman - Otter Tail - Polk - Red Lake - Roseau - Saint Louis - Stevens - Todd - Traverse - Wadena