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Mineral Resources > Online Spatial Data > Geology > by state > North Dakota

Sentinel Butte Formation

Gray-brown silt, sand, clay, sandstone, and lignite; river, lake, and swamp sediment; as thick as 200 meters (600 feet).
StateNorth Dakota
NameSentinel Butte Formation
Geologic agePhanerozoic | Cenozoic | Tertiary | Paleocene
Original map labelTs
Primary rock typesilt
Secondary rock typesand
Other rock typesclay or mud; sandstone; coal
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Unconsolidated > Fine-detrital > Clay (Bed)
Unconsolidated > Coarse-detrital > Sand (Bed)
Unconsolidated > Fine-detrital > Silt (Bed)
Minor
Sedimentary > Coal (Bed)
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.
Geographic coverageAdams - Billings - Bowman - Burke - Dunn - Golden Valley - Grant - Hettinger - McKenzie - McLean - Mercer - Morton - Mountrail - Oliver - Sioux - Slope - Stark - Williams

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