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Glacial Sediment-Glacial Sediment Draped Over Pre-existing Topography

Unbedded, unsorted mixture of clay, silt, sand, and pebbles, and a few cobbles and boulders; as thick as 30 meters (100 feet)
State North Dakota
Name Glacial Sediment-Glacial Sediment Draped Over Pre-existing Topography
Geologic age Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene
Comments Glacial Sediment Draped Over Pre-existing Topography-Thin glacial sediment draped over and only slightly modifying the non-glacial topography existing before the last glacial advance.
Primary rock type clay or mud
Secondary rock type silt
Other rock types sand; gravel
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Clay (Glacial, outwash)
Unconsolidated > Fine-detrital > Silt (Glacial, outwash)
Unconsolidated > Coarse-detrital > Sand (Glacial, outwash)
Unconsolidated > Coarse-detrital > Gravel (Glacial, outwash)
Minor
Unconsolidated > Coarse-detrital > Boulders (Glacial, outwash)
Map references
Clayton, Lee, 1980, Geologic Map of North Dakota: U. S. Geological Survey, Scale 1:500K.
Unit references
Clayton, Lee, 1980, Geologic Map of North Dakota: U. S. Geological Survey, Scale 1:500K.
Counties Burke - Burleigh - Divide - Dunn - Emmons - Kidder - Logan - McIntosh - McKenzie - McLean - Mercer - Morton - Mountrail - Oliver - Ward - Williams