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A dissected plateau is a plateau area that has been severely eroded such that the relief is sharp. Such an area may be referred to as mountainous, but dissected plateaus are distinguishable from orogenic mountain belts by the lack of folding , metamorphism , extensive faulting , or magmatic activity that accompanies orogeny .
Hachure representation of relief was standardized by the Austrian topographer Johann Georg Lehmann in 1799. [1] Hachures may be combined with other ways of representing relief, such as shades, the result being a shaded hachure map; an example of such a map is the Dufour Map of Switzerland . [ 2 ]
As a result, this area of the Allegheny Plateau has lower relief and gentler slopes than the relatively rugged Unglaciated Allegheny Plateau. In general, the glaciated lies to the north and west of the unglaciated, and forms an arc in northeastern to southeastern Ohio lying between the glacial till plains and the Unglaciated Allegheny Plateau.
[9] [10] [A] As shown by equation 2 the angle of steep slopes changes very little even at very high increases of erosion rates, meaning that it is not possible to infer erosion rates from topography in steep slopes other than hinting they are much higher than for lower angle slopes.
A view through a coulee in Alberta, with steep but lower sides, and water in the bottom. Coulee, or coulée (/ ˈ k uː l eɪ / or / ˈ k uː l iː /), [1] is any of various different landforms, all of which are kinds of valleys or drainage zones. The word coulee comes from the Canadian French coulée, from French couler 'to flow'.
Pediment surface at base of Book Cliffs, Utah. A pediment, also known as a concave slope or waning slope, [1] is a very gently sloping (0.5°–7°) inclined bedrock surface. [2]
Cut bank erosion and point bar deposition as seen on the Powder River in Montana. Cut banks along the Cut Bank Creek. A cut bank, also known as a river cliff or river-cut cliff, is the outside bank of a curve in a water channel (), which is continually undergoing erosion. [1]
The cliffs are noted as a textbook example of a basaltic flow with well defined joints and hexagonal columns. They were named after a band of Eastern Shoshone known as Tukuaduka ( sheep eaters ). Many of the exposed cliffs are located along a steep inaccessible canyon cut by the Gardner near Bunsen Peak , but some of the cliffs located just off ...