Limestone
- •Limestone is the most common biogenic/chemical sedimentary rock.
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- •Generally, limestone forms by the accumulation of *CaCO3 in one of two ways:
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- •Through the growth, death, and accumulation of coral reef parts in warm, shallow oceans.
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- •Through the death and accumulation of plankton shells in the deeper ocean.
*Layers of limestone are also referred to as “Carbonates”