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fossiliferous limestone

Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 varsha asked over 2 years ago

What is fossiliferous limestone ?

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 answered over 2 years ago

Fossiliferous limestone is any type of limestone, made mostly of calcium carbonate (CaCO3) in the form of the mineralscalcite or aragonite, that contains an abundance of fossils or fossil traces. The fossils in these rocks may be of macroscopic or microscopic size. The sort of macroscopic fossils often include crinoid stems, brachiopods, gastropods, and other hard shelled mollusk remains.

In some cases, microfossils such as siliceous diatom shells in deposition may convert overtime to opal and chert, providing the only inferred evidence of bioactivity preserved in limestone.

Fossiliferous limestone is termed biosparite limestone under the Folk classification of sedimentary rocks.

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