Granitic intrusion of unknown age

Granitic intrusion of unknown age. Low gravity and magnetic expression.
State Minnesota
Name Granitic intrusion of unknown age
Geologic age Archean or Paleoproterozoic
Lithologic constituents
Major
Igneous > Plutonic > Granitic (Pluton)
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 Brown - Chippewa - Kandiyohi - Lac qui Parle - McLeod - Morrison - Nicollet - Otter Tail - Swift - Todd - Traverse - Watonwan