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Vedic astrology observations tumblr4/14/2024 there is a narrow valley with (almost) vertical sides. if the rate of erosion of each rock type is different, then a waterfall is formed. Waterfalls occur when the river channel crosses from one rock type to another. overtime, this means that the v shaped valley is cut into the hillside. the flow of the water also swings from side to side, creating some sideways erosion. the river cuts a narrow valley with steep v-shaped sides. the vertical erosion cuts into the river bed. The force of the water from the river is directed downwards. as a result of abrasion from the collapsed rock and further hydraulic action, a plunge pool is created. this means that the hard rock becomes an overhang and colapses. as a result, the softer rock is eroded at a faster rate by hydraulic action. A plunge pool is formed when water flows over a bend of hard and soft rock.
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