How is limestone created?



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    Limestone is a type of sedimentary rock whose prime ingredient is calcium carbonate. It is created via the gradual layering of minerals over long periods of time. Limestone is usually formed either in water, or on the coast near water. As the layers are gradually deposited one on top of the other the pressure on the lower layers grows, until they undergo a process known as lithification (i.e. to turn into a rock). The calcium carbonate in limestone is either deposited by living organisms in the sea, or is chemically precipitated into the sea.

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