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Dakota Formation

The Dakota is a sedimentary geologic unit name of formation and group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and shales deposited in the Mid-Cretaceous opening of the Western Interior Seaway. The usage of the name Dakota for this particular Albian-Cenomanian strata is exceptionally…

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Approximate paleocoordinates
38°54′N 66°24′W / 38.9°N 66.4°W / 38.9; -66.4
Country
United States, Canada
Named by
Meek and Hayden
Named for
Dakota City, Nebraska
Other
marine shale, lignite, coal
Overlies
Precambrian (Sioux Quartzite), Permian, Early Cretaceous (Lytle), and Jurassic (Morrison Formation)

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Overview

Naming and rank

Geological history

Western Interior Seaway sequences

Lithology

Two sides of the seaway

Economic geology

Paleoenvironment

Current stratigraphic correlation charts

History of exploration

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Dakota Formation

Nodes126
Edges125
Triples320
Avg. degree1.98
Density0.015873
Components1

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Dakota Formation

Top relations

related to history · 178
Dakota Formation → AAPG Memoir, Academy, Albian, American Association, Annual Report, Application, Arkansas Valley, Bibcode, Brenner, Brian, Campanian, Capt, Carthage, Charts, Christopher, Cobban, Colorado, Colorado Arkansas Valley, Colorado Group, Contemporary
related to Naming and rank · 41
Dakota Formation → As, Buckhorn Conglomerate, But, Cedar Mountain Formation, Cheyenne Sandstone, Colorado, Colorado Plateau, Cretaceous, Dakota, Dakota City, Dakota Group, Dakota Groups, Dakota Hogback, Dakota Sandstone, Denver Basin, Dry Cimarron River, Formation, Graneros, Great Plains, Hayden
related to Two sides of the seaway · 40
Dakota Formation → Albian, Arctic Ocean, As, Cenomanian, Colorado Plateau, Cretaceous Seaway, Dakota, Dakota Group, Dakota Sandstone, Early Cretaceous, Great Plains, Greenhorn Seaway, Gulf, Historically, However, In, Its, Lower Cretaceous, Ludvigson, MA
related to Western Interior Seaway sequences · 26
Dakota Formation → Dakota, Each, Facies, Five, Graneros, In, Iowa, Kiowa, Lower Dakota, Lower Mancos, Lytle Formation, Missouri River, Mowry, Muddy, North America, Skull Creek, Southwest, The, The Greenhorn Cycle, These
related to Vertebrate paleofauna · 20
Dakota Formation → Barosaurus, Burt County, Colorado, Cretaceous, Dakotasuchus, Dinosaur, Dinosaur Ridge, Fossil, Goniopholidids, Jefferson County, Kansas, Nebraska, Other, Paronychodon, Partial, Richardoestesia, Silvisaurus, Some, The, Troodon
Approximate paleocoordinates · 1
Dakota Formation → 38°54′N 66°24′W / 38.9°N 66.4°W / 38.9; -66.4
Coordinates · 1
Dakota Formation → .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-pars…
Country · 1
Dakota Formation → United States, Canada
Named by · 1
Dakota Formation → Meek and Hayden
Named for · 1
Dakota Formation → Dakota City, Nebraska

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Important terminology

dakota formation colorado seaway marine kansas cretaceous western sandstone group plains sequence nebraska name type unit sequences shale early west

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Dakota FormationApproximate paleocoordinates38°54′N 66°24′W / 38.9°N 66.4°W / 38.9; -66.41.00infobox
Dakota FormationCoordinates.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-pars…1.00infobox
Dakota FormationCountryUnited States, Canada1.00infobox
Dakota FormationNamed byMeek and Hayden1.00infobox
Dakota FormationNamed forDakota City, Nebraska1.00infobox
Dakota FormationOthermarine shale, lignite, coal1.00infobox
Dakota FormationOverliesPrecambrian (Sioux Quartzite), Permian, Early Cretaceous (Lytle), and Jurassic (Morrison Formation)1.00infobox
Dakota FormationPrimaryvarying proportions of terrestrial sandstone, mudstone, and clay, with beds of shallow marine mud1.00infobox
Dakota FormationRegionGreat Plains, Rocky Mountains, Colorado Plateau, Rio Grande rift valley1.00infobox
Dakota FormationSub-unitsType Location: Formation (Nebraska/Iowa): Woodbury Nishnabotna Formation (Kansas): D/Johnson Clay Member J/Terra Cotta Clay Member Formation (San Juan Basin, etc.): Twowells Ton…1.00infobox
Dakota FormationTypeGeological formation or group1.00infobox
Dakota FormationUnderliesGraneros Shale (sometimes included in the Colorado Group of the Great Plains or the Mancos Shale of the Southwest)1.00infobox
Dakota FormationYear defined18621.00infobox
Dakota Formationis aunit's primary name and rank in the Great Plains0.90text

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