Schroeder-Lutsen basalts

Unconformably overlies units described below (Mns, Mnu, Mnr, and Mnb).
State Minnesota
Name Schroeder-Lutsen basalts
Geologic age Mesoproterozoic
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)
Comments Part of the North Shore Volcanic Group - upper sequence, normal polarity. Part of the Keweenawan Supergroup and Midcontinent Rift Intrusive Supersuite.
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 Cook - Lake