- Dakota Sandstone
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Dakota Sandstone
Stratigraphic range: Early CretaceousType Geological formation Location Region North America The Dakota Sandstone (also Cockrum Sandstone and Dakota Formation, more formally the Dakota Group) is a general term for an ill-defined early Cretaceous formation of the Rocky Mountains and Great Plains. It consists of sandy, shallow-marine deposits with intermittent mud flat sediments, and occasional stream deposits.[1][2] It is an important aquifer in some areas of the Great Plains.[2][3] It is frequently a porous sandstone and can reach thicknesses of more than 30 meters.
Notes
- ^ "Geology of the Quarry: Dakota Sandstone" Dinosaur National Monument, National Park Service
- ^ a b McLaughlin, Thad G. (1942) "Water-bearing Formations, continued: Cretaceous System: Dakota Group" Geology and Ground-Water Resources of Morton County, Kansas
- ^ Wang, Herb (2003) "Saga of the Dakota Sandstone"
References
- Dinosaur National Monument Homepage: Geology of the Quarry. (Accessed 5/24/06)
- Morton County Geohydrology: Water-Bearing Formations, continued. (Accessed 5/24/06)
- Saga of the Dakota Sandstone (PDF answer sheet) (Accessed 5/24/06)
External links
Categories:- Cretaceous geologic formations
- Geologic formations of the United States
- Geology of the Rocky Mountains
- Sandstone
- Geologic formation stubs
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