Gabbro, ferrogabbro, and gabbronorite

Gabbro, ferrogabbro, and gabbronorite. Includes the Lax Lake and Cloquet Lake gabbros, Sonju Lake (~1,096 Ma), Dam Five, Wilson Lake (~1,096 Ma), Fourmile Lake, and Upper Manitou intrusions (~1,096 Ma).
State Minnesota
Name Gabbro, ferrogabbro, and gabbronorite
Geologic age Mesoproterozoic
Lithologic constituents
Major
Igneous > Plutonic > Gabbroic > Gabbro (Diabase)Gabbro, ferrogabbro, and gabbronorite
Comments Part of the Beaver Bay Complex and other hypabyssal intrusions. 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