Great Plains, Rocky Mountains, Colorado Plateau, Rio Grande rift valley
Country
United States Canada
Type section
Named for
Dakota City, Nebraska
Named by
Meek and Hayden
Year defined
1862[6]
Dakota Formation (the United States)
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Dakota Formation (Nebraska)
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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.[7] The usage of the name Dakota for this particular Albian-Cenomanian strata is exceptionally widespread; from British Columbia and Alberta to Montana and Wisconsin to Colorado and Kansas to Utah and Arizona. It is famous for producing massive colorful rock formations in the Rocky Mountains and the Great Plains of the United States, and for preserving both dinosaur footprints and early deciduous tree leaves.
Owing to extensive weathering of older rocks during the Jurassic and Triassic, the Dakota strata lie unconformably atop many different formations ranging in age from Precambrian to Early Cretaceous. With a few local exceptions, it is the oldest Cretaceous unit exposed in the northern Great Plains, including Kansas, Nebraska, Iowa, Minnesota, and Wisconsin, as well as the Desert Southwest. It generally consists of sandy, shallow marine or beach deposits with marine-influenced mudflat sediments, and occasional stream deposits.[8][9]
^"Geologic Unit: Woodbury". National Geologic Database. Geolex — Significant Publications. United States Geological Survey. Retrieved November 27, 2020.
^Cite error: The named reference AZtoOK was invoked but never defined (see the help page).
^Edward Murphy, editor, North Dakota Stratigraphic Column, North Dakota Geological Surve.
^ abCite error: The named reference GeolexDakota was invoked but never defined (see the help page).
^Cite error: The named reference Ludvigson2010 was invoked but never defined (see the help page).
^Cite error: The named reference meekandhayden1862 was invoked but never defined (see the help page).
^Monroe, James S. and Wicander, Reed (1997) The Changing Earth: Exploring Geology and Evolution (2nd edition) Wadsworth Publishing Company, Belmont, California, page 610, ISBN 0-314-09577-2
^"Geology of the Quarry: Dakota Sandstone" Dinosaur National Monument, National Park Service
^McLaughlin, Thad G. (1942) "Water-bearing Formations, continued: Cretaceous System: Dakota Group" Geology and Ground-Water Resources of Morton County, Kansas
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...
unincorporated community Dakota City, Iowa Dakota City, Nebraska Dakota County, Minnesota Dakota County, Nebraska DakotaFormation, a North American geologic...
Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming. In Montana, the Hell Creek Formation overlies the...
conglomerate. Locally, it is the uppermost member and has contact with the DakotaFormation. Jackpile Sandstone Member (NM): primarily a whitish crossbedded subarkose...
Montana, North Dakota, Saskatchewan and Manitoba. The formation was initially described by geologist J. W. Nordquist in 1953. The formation is entirely in...
unearthed in the Hell Creek Formation and other nearby areas. An undescribed and unnamed pachycephalosaur is present in North Dakota. Pachycephalosaur remains...
of the Niobrara Chalk is comparable to that of the DakotaFormation, although the DakotaFormation, which was deposited during the Cenomanian, predates...
rivers exit the mountains. The ridge takes its name from the DakotaFormation, a formation with resistant sandstone beds that cap the ridge. The hogback...
of the Niobrara Chalk is comparable to that of the DakotaFormation, although the DakotaFormation, which was deposited during the Cenomanian, predates...
North Dakota ( /dəˈkoʊtə/ də-KOH-tə) is a landlocked U.S. state in the Upper Midwest, named after the indigenous Dakota Sioux. It is bordered by the Canadian...
sedimentary strata that have widely been called DakotaFormation in Iowa, Kansas and Nebraska. The use of the name "Dakota" in western states was the result of early...
Hannah Dakota Fanning (born February 23, 1994) is an American actress. She rose to prominence at the age of seven for playing the daughter of an intellectually...
Coronado Heights is one of a chain of seven sandstone bluffs in the DakotaFormation and rises approximately 300 feet. In 1915, a professor at Bethany College...
South Dakota (/dəˈkoʊtə/ də-KOH-tə; Sioux: Dakȟóta itókaga, pronounced [daˈkˣota iˈtokaga]) is a landlocked state in the North Central region of the United...
The governor of South Dakota is the head of government of South Dakota. The governor is elected to a four-year term in even years when there is no presidential...
correlates with the lower DakotaFormation (Nishnabotna member) known in the southwest corner of the State. The South Dakota Geological Survey has also...
rocks on the east side of Dinosaur Ridge are part of the Cretaceous DakotaFormation. When Alameda Parkway was being constructed in 1937 (by the WPA) in...
Paracimexomys group. The genus Dakotamys ("Dakota mouse") was named by Eaton J.G. in 1995. Dakota refers to the DakotaFormation. "Paracimexomys and Dakotamys.....
Shale conformity overlies the DakotaFormation and underlies the Straight Cliffs Formation. The top of the DakotaFormation is known for its sandier coarsening...
mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. Black Elk Peak, which rises to...
(2005). "Surface and subsurface stratigraphy of the Burro Canyon Formation, Dakota Sandstone, and intertongued Mancos Shale of the Chama Basin, New Mexico"...
which the same formation is exposed. Such sites may have separate entries if they are considered to be more notable than the formation as a whole. In...
The North Dakota oil boom was the period of rapidly expanding oil extraction from the Bakken Formation in the state of North Dakota that lasted from the...
Lance Formation is Late Maastrichtian in age (Lancian land mammal age), and shares much fauna with the Hell Creek Formation of Montana and North Dakota, the...
94-million-year-old Dakota Sandstone were deposited on the shore of this seaway early in the Cretaceous. The up to 150 foot (45 m) thick formation consists of...
Dilcher, David L. (1 January 1994). "Lower vascular plants of the DakotaFormation in Kansas and Nebraska, USA". Review of Palaeobotany and Palynology...
(Squamata: Mosasauroidea) from the Pierre Shale Formation (Pembina Member: Middle Campanian) of North Dakota". Bulletin of the American Museum of Natural...
March 8, 2011, she announced the formation of a leadership political action committee, KRISTI PAC. Former South Dakota Lieutenant Governor Steve Kirby...
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