Mylonite, varied protolith

Mylonite, varied protolith. Age of shearing unknown and likely protracted.
State Minnesota
Name Mylonite, varied protolith
Geologic age Archean
Lithologic constituents
Tectonite > Mylonite

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 Chippewa - Renville - Yellow Medicine