State | South Dakota |
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Name | Till, Ground Moraine |
Geologic age | Pleistocene-Upper Wisconsin |
Lithologic constituents | Major
Unconsolidated > Fine-detrital (Glacial-till)compact, silty, clay-rich matrix
Unconsolidated > Coarse-detrital (Glacial-till)sand to boulder-sized clasts of glacial origin
|
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 | Corson - Dewey |