Terrace Deposits

Clay to boulder-size clasts deposited as pediments, paleochannels, and terrace fills of former flood plains. Thickness up to 75 ft (23m).
State South Dakota
Name Terrace Deposits
Geologic age Quaternary
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Clay (Terrace-stream)clay to boulder-sized clasts
Unconsolidated > Coarse-detrital (Terrace-stream)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 Bennett - Butte - Corson - Custer - Dewey - Fall River - Gregory - Haakon - Harding - Jackson - Jones - Lawrence - Lyman - Meade - Mellette - Pennington - Perkins - Shannon - Stanley - Todd - Tripp - Ziebach