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TwistedSifter on MSNScientists Prove That Million-Year-Long Rock Formation Processes Are Now Happening In As Little As 35 Years, And Humans Are Totally To BlameSedimentary rock is comprised of sediment, as the name suggests. Over time, tiny minerals, sand, rocks, and debris layer on top of one another, with the pressure of the layers of ...
Igneous rock is formed by the cooling of molten rock, either at the surface (lava), or underground (as granite or other similar rocks). The heat of molten rock usually incinerates organisms rather ...
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