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North Dakota is underlain by Precambrian crystalline basement rock, although these rocks are less well understood than in neighboring states. In the Proterozoic, a mountain range known as the Western Dakota Mobile Belt formed between two billion and 1.8 billion years ago in connection with the Trans-Hudson orogeny, stretching north into Manitoba and Saskatchewan before eroding almost entirely ...
The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.
The fossil was collected in 2015 by the North Dakota Geological Survey, a state agency dedicated to geology and public education about minerals and fossils. ... When the researchers analyzed the ...
The Hell Creek Formation is an intensively studied geological formation of mostly Upper Cretaceous and some Early Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming.
North Dakota: Country: United States: The Cannonball Formation is a geologic formation in western North Dakota. [1] It preserves fossils dating back to the Paleogene ...
Tanis is a paleontological site in southwestern North Dakota, United States. It is part of the heavily studied Hell Creek Formation, a geological region renowned for many significant fossil discoveries from the Upper Cretaceous and lower Paleocene.
The Bullion Creek Formation is a geologic formation in western North Dakota. [1] It preserves bones and tracks of an extinct crocodile and other fossils of Late Paleocene age. [ 2 ]
F.B. Meek and F.V. Hayden first used Dakota in 1862 to name the distinctive red sandstone exposures along the Missouri River near Dakota City, Nebraska. But, with this name, they applied the term "group", which at that time had the meaning of formation rank, as presently used. [6] Dakota Formation is the unit's primary name and rank in the ...