Rock pedestal

Rock pedestal

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Credit: DAVID PARKER/SCIENCE PHOTO LIBRARY

Caption: Rock pedestal. This landform is the result of gradual erosion of an isolated outcrop of clay-sandstone rock. Abrasion by wind-borne grains of sand mainly occurs nearer the ground, resulting in a greater rate of erosion at the base than at the top. This causes the rock's top-heavy appearance. Photographed in the Tassili n'Ajjer National Park, Algeria.

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Keywords: abraded, abrasion, aeolian, africa, african, algeria, clay-sandstone, differential, eolian, eroded, erosion, geographical, geography, geological, geology, geomorphology, landform, mushroom rock, one, pedestal, rock, sahara desert, sandstone, sedimentary, single, tamarit, tasili n'ajjer, wind erosion, world heritage site

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