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Glacial Sediment- Collapsed Glacial Sediment

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- Collapsed Glacial Sediment
Geologic age Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene
Comments Collapsed Glacial Sediment-Undulating- 2 to 4 degree maximum slope angles. Supraglacial sediment with hummocky topography; local relief (in meters) and maximum slope angles (in degrees) are approximately equal to the thickness of supraglacial sediment (in meters).
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 Barnes - Benson - Burke - Cass - Cavalier - Dickey - Divide - Emmons - Foster - Grand Forks - Kidder - LaMoure - Logan - McHenry - McIntosh - McLean - Mountrail - Nelson - Ramsey - Ransom - Richland - Rolette - Sargent - Sheridan - Steele - Stutsman - Towner - Walsh - Ward - Wells - Williams