| State | Minnesota |
|---|---|
| Name | Biotite schist of graywacke protolith, and schist-rich migmatite |
| Geologic age | Neoarchean |
| Lithologic constituents | Major
Metamorphic > Schist > Mica-schist > Biotite-schistBiotite schist of graywacke protolith
Metamorphic > Migmatiteschist-rich migmatite
|
| 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 | Beltrami - Clearwater - Koochiching - Lake - Lake of the Woods - Norman - Pennington - Polk - Red Lake - Saint Louis |