How Sand Is Formed

Sand is composed of particles of minerals, rock, or soil, with quartz being the most common constituent. Peaks that once stood rock solid have eroded into sand. How does such erosion occur? Sand is often the product of ocean violence. Waves smash against coastal cliffs, and these collisions loosen and rip away slabs of rock. Very large pieces surrender before the unremitting assault, being sloughed off in chunks into the surf. The churning sea grinds off sharp edges, producing boulders. Constant motion gradually wears them into pebbles, and these are…

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