why mushroom rocks are found in desert class 7 geography
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A mushroom rock, also called rock pedestal, or a pedestal rock, is a naturally occurring rock whose shape, as its name implies, resembles a mushroom. The rocks are deformed in a number of different ways: by erosion and weathering, glacial action, or from a sudden disturbance. Mushroom rocks are related to, but different from, yardang.[1]
Definition: A rock pedestal or gour is a typical mushroom shaped landform that is formed by the action of wind. We know as we move up, the material carrying capacity of the wind decreases and speed increases. At an average height of 2 to 3 feet I from the base, both the material carrying capacity and the speed is maximum. So abrasion (erosion by wind in which transported materials hit an exposed rock surface and polish it or scratch it) is maximum there. Also in some cases hard rocks are arranged horizontally over a soft rock resulting in such erosion. Therefore we sometimes say collection of rock pedestal as Zeugen.
hope it is useful....!!
Definition: A rock pedestal or gour is a typical mushroom shaped landform that is formed by the action of wind. We know as we move up, the material carrying capacity of the wind decreases and speed increases. At an average height of 2 to 3 feet I from the base, both the material carrying capacity and the speed is maximum. So abrasion (erosion by wind in which transported materials hit an exposed rock surface and polish it or scratch it) is maximum there. Also in some cases hard rocks are arranged horizontally over a soft rock resulting in such erosion. Therefore we sometimes say collection of rock pedestal as Zeugen.
hope it is useful....!!
mamtahvaid:
thanx
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Answer:
Explanation:
Because they aquainted with erosion type area
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