Gabbro, peridotite, pyroxenite, lamprophyre, and metamorphic equivalents (MNWgp;0)

Gabbro, peridotite, pyroxenite, lamprophyre, and metamorphic equivalents

Gabbro, peridotite, pyroxenite, lamprophyre, and metamorphic equivalents. Includes the Oaks intrusion (~2,671 Ma) in the Wabigoon subprovince, and a ~2,639 Ma lamprophyre in the western Wawa subprovince; locally defined by variably high gravity and magnetic signatures.

State	Minnesota
Name	Gabbro, peridotite, pyroxenite, lamprophyre, and metamorphic equivalents
Geologic age	Neoarchean
Lithologic constituents	Major Igneous > Plutonic > Gabbroic > Gabbro (Pluton) Igneous > Plutonic > Ultramafic > Peridotite (Pluton) Igneous > Plutonic > Ultramafic > Pyroxenite (Pluton) Incidental Metamorphicmetamorphic equivalents Igneous > Hypabyssal > Lamprophyre (Dike or sill)
Comments	Intrusions in all subprovinces of the Superior Province. Part of generally discrete, unfoliated to weakly magmatically foliated or lineated plutons.
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	Becker - Beltrami - Cass - Chippewa - Clay - Clearwater - Crow Wing - Douglas - Grant - Hubbard - Itasca - Kandiyohi - Koochiching - Lake - Lake of the Woods - Marshall - Norman - Otter Tail - Pennington - Polk - Roseau - Saint Louis - Todd - Wilkin

Gabbro, peridotite, pyroxenite, lamprophyre, and metamorphic equivalents

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.