Definition of "limestones" []

• Plural form of limestone. (noun)

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• "Thus in soluble rocks, such as limestones, joints enlarged by percolating water are sometimes filled with metalliferous deposits, as, for example, the lead and zinc deposits of the upper Mississippi valley."
• "The Company is also investigating the application of other geophysical tools including seismic techniques to further define the coal seam and the paleo-surface of the underlying Devonian limestones which is believed to be one of the controlling factors in the deposition of the coal."
• "The Naica Hills are comprised of 97 million year old (Early Cretaceous) limestones."