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

Coleharbor Formation- Shoreline Sediment

Well-sorted sand and gravel of beach-ridge complexes; as thick as 5 meters (15 feet).
StateNorth Dakota
NameColeharbor Formation- Shoreline Sediment
Geologic agePhanerozoic | Cenozoic | Quaternary | Pleistocene Holocene
Original map labelQcs
CommentsColeharbor Formation- Sandy, silty clay with pebbles of limestone, dolomite, granite, gneiss, and basalt; nonorganic, bedded clay, silt, sand, and gravel; as thick as 200 meters (600 feet).
Primary rock typesand
Secondary rock typegravel
Other rock types
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Gravel (Beach)
Unconsolidated > Coarse-detrital > Sand (Beach)
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 coverageCass - Cavalier - Kidder - Pembina - Walsh

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