Troctolite (MNY3lt;0)

Troctolite

Troctolite. Includes the Boulder Lake, Tuscarora (~1,099 Ma), Partridge River (~1,098 Ma), South Kawishiwi, and part of the Western Margin intrusions.

State	Minnesota
Name	Troctolite
Geologic age	Mesoproterozoic
Lithologic constituents	Major Igneous > Plutonic > Gabbroic > Gabbro > Troctolite
Comments	Part of the Duluth Complex - layered series. 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	NGMDB product page for 96821
Counties	Cook - Lake - Saint Louis

Troctolite

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.