| State | Minnesota |
|---|---|
| Name | Iron-formation in the Cuyuna North and South Ranges and Mille Lacs Group |
| Geologic age | Paleoproterozoic |
| Lithologic constituents | Major
Sedimentary > Chemical > Banded-iron-formation (Bed)
|
| Comments | Part of the Mille Lacs and North Range Groups in the fold-and-thrust belt of the Penokean orogen (twice-deformed). Twice-deformed metasedimentary rocks at the apparent base of the Animikie basin. Part of the Geon 18 intrusions and supracrustal rocks (syn- to late Penokean orogenesis). |
| 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.USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/https://ngmdb.usgs.gov/Geolex/search |
| NGMDB product | |
| Counties | Aitkin - Crow Wing - Kandiyohi - Stearns |