| State | Minnesota |
|---|---|
| Name | Little Falls Formation |
| Geologic age | Paleoproterozoic |
| Lithologic constituents | Major
Metamorphic > Schistof graywacke-mudstone protolith
Metamorphic > Metasedimentary > Metaclastic > Slateof graywacke-mudstone protolith
|
| Comments | 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. |
| NGMDB product | |
| Counties | Aitkin - Benton - Carlton - Crow Wing - Kandiyohi - McLeod - Meeker - Mille Lacs - Morrison - Pine - Renville - Stearns - Todd |