Landslide Deposits

Landslide, slump, and collapsed material composed of chaotically mixed boulders and finer grained rock debris. Thickness up to 180 ft (55m).
State South Dakota
Name Landslide Deposits
Geologic age Quaternary
Lithologic constituents
Unconsolidated > Coarse-detrital > Sand (Landslide)
Unconsolidated > Coarse-detrital > Gravel (Landslide)
Unconsolidated > Coarse-detrital > Boulders (Landslide)

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 - Custer - Dewey - Fall River - Harding - Jackson - Meade - Pennington - Shannon - Stanley