Gabbro, pyroxenite, diorite, and lamprophyre

Gabbro, pyroxenite, diorite, and lamprophyre. Includes the Watab quartz diorite (~1,780 Ma), St. Wendell quartz gabbro, and an unnamed diorite (~1,786 Ma).
State Minnesota
Name Gabbro, pyroxenite, diorite, and lamprophyre
Geologic age Paleoproterozoic
Lithologic constituents
Igneous > Plutonic > Gabbroic > Gabbro (Batholith)
Igneous > Plutonic > Dioritic > Diorite (Batholith)
Igneous > Plutonic > Ultramafic > Pyroxenite (Batholith)
Igneous > Hypabyssal > Lamprophyre (Batholith)
Comments Part of the East-central Minnesota batholith. Part of the Geon 17 post-tectonic (post-Penokean orogeny) intrusions related to the Yavapai orogeny.

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 Benton - Chippewa - Crow Wing - Kandiyohi - McLeod - Meeker - Mille Lacs - Morrison - Pope - Renville - Sherburne - Stearns