difference between the calcareous and carbonaceous sedimentary rocks
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They are both organically formed sedimentary rocks. Calcareous rocks are formed by skeletons, shells and animal remains. ... Rocks like Peat, Lignite, Bituminous and anthracite are termed as carbonaceous rocks. They are formed due to precipitation of carbonate materials.
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Sedimentary rocks are formed by the accumulation of other eroded substances, while Metamorphic rocks are formed when rocks change their original shape and form due to intense heat or pressure.
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