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How are sedimentary rocks formed?

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Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension.
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Sedimentary rocks form when minerals or organic particles settle and accumulate in rivers, streams and oceans in a process known as sedimentation. More and more sediment is built up and after a few hundred thousand years the sediment is compacted into sedimentary rocks. Almost all sedimentary rocks form underwater at low temperature and low pressure.
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User Fernando B
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