![]() Objects in liquefied sand sink to the level at which the weight of the object is equal to the weight of the displaced soil/water mix and the submerged object floats due to its buoyancy. The cushioning of water gives quicksand, and other liquefied sediments, a spongy, fluid-like texture. This causes the sand to form a suspension and lose strength. The saturated sediment may appear quite solid until a sudden change in pressure or shock initiates liquefaction. In the case of upward flowing water, forces oppose the force of gravity and suspend the soil particles. ![]() ![]() Quicksand can form in standing water or in upward flowing water (as from an artesian spring). When water in the sand cannot escape, it creates a liquefied soil that loses strength and cannot support weight. It forms in saturated loose sand when the sand is suddenly agitated. Quicksand is a colloid consisting of fine granular material (such as sand, silt or clay) and water.
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