Amphibolitic schist and gneiss

Amphibolitic schist and gneiss. Both extrusive and intrusive protoliths are likely.
State Minnesota
Name Amphibolitic schist and gneiss
Geologic age Neoarchean
Lithologic constituents
Major
Metamorphic > Gneiss
Metamorphic > Schist > Amphibole-schist
Comments Foliated to gneissic intrusive complexes and components of batholiths. Part of the metamorphic and intrusive rocks of the Quetico subprovince.
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 Koochiching - Lake - Saint Louis