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The Loess (/ ˈ l oʊ. ə s /, / ˈ l ʌ s /, or / ˈ l ɛ s /) Hills are generally located between 1 and 15 miles (2 and 24 km) east of the Missouri River channel.The Loess Hills rise 200 feet (60 m) above the flat plains forming a narrow band running north–south 200 miles (320 km) along the Missouri River. [1]
Loess, wind-blown silt, is a relatively common soil type in the interior of North America. The Dissected Loess Plains are exceptional because of the depth of loess laid down, with deposits up to 200 feet thick. [1] These deposits are dissected by a set of drainage ravines, canyons, and deep valleys.
Loess in Vicksburg, Mississippi, United States. A loess (US: / ˈ l ɛ s, ˈ l ʌ s, ˈ l oʊ. ə s /, UK: / ˈ l oʊ. ə s, ˈ l ɜː s /; from German: Löss) is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. [1]
The Northwest Iowa Loess Prairies ecoregion is a gently undulating plain with a moderate to thick layer of loess. It is the highest and driest region of the Western Corn Belt Plains, as it rises to meet the Northern Glaciated Plains (46) of the Dakotas.
Kansas is located equidistant from the Pacific and Atlantic oceans. The geographic center of the 48 contiguous states is in Smith County near Lebanon . Until 1989, the Meades Ranch Triangulation Station in Osborne County was the geodetic center of North America: the central reference point for all maps of North America.
These Touchet beds are often covered by windblown loess which were deposited later; the number of layers varies with location. [2] [3] [4] The beds vary in thickness from 330 ft (100 m) at lower elevations where a number of layers can be found to a few extremely thin layers at the maximum elevation where they are observed (1,150 ft (350 m)). [1]
The Glenwood Archeological District is a nationally recognized historic district and archaeological sites located near Glenwood, Iowa, United States.It is one of nine sites from the Nebraska Phase of the Woodland period recognized by archaeologists, and the only one located east of the Missouri River. [2]
The North American Mississippi Valley Loess Plains are a Level III ecoregion designated by the Environmental Protection Agency (EPA) in six U.S. states. The region lies primarily on the eastern border of the Mississippi Alluvial Plain , from the Ohio River in western Kentucky, through Tennessee and Mississippi, to Louisiana.