Diabase, gabbro, and ferromonzodiorite

Diabase, gabbro, and ferromonzodiorite. Primarily sills including the Endion, Lester River, Silver Cliff, Stony Point, Split Rock, Lafayette Bluff, Lake Clara–Lichen Lake, Pigeon River, and Reservation River intrusions.
State Minnesota
Name Diabase, gabbro, and ferromonzodiorite
Geologic age Mesoproterozoic
Lithologic constituents
Major
Igneous > Plutonic > Gabbroic > Gabbro (Dike or sill)
Igneous > Plutonic > Dioritic > Monzodiorite (Dike or sill)ferromonzodiorite
Igneous > Hypabyssal > Mafic-hypabyssal (Diabase, Dike or sill)
Comments Part of miscellaneous intrusions 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 - Saint Louis