| State | South Dakota |
|---|---|
| Name | Colluvium |
| Geologic age | Quaternary |
| Lithologic constituents | Major
Unconsolidated > Coarse-detrital (Colluvial)clay to boulder-sized clasts
Unconsolidated > Fine-detrital (Colluvial)clay to boulder-sized clasts
|
| References | Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000. |
| NGMDB product | |
| Counties | Lawrence - Lyman - Meade - Mellette - Pennington - Perkins |