Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of limestone.

Etymologies

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Examples

  • 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 Elements of Geology

  • 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.

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  • The Naica Hills are comprised of 97 million year old (Early Cretaceous) limestones.

    Did you know? Chihuahua caves house the world's largest crystals

  • Just make sure the rocks are not organic shales or limestones, as these too were derived from living organisms.

    Hath Not a Plant Life?

  • It also marks another big step in the takeover of geochemical processes by living things: most Phanerozoic limestones are made of biological debris.

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  • The area is underlain by extensive Pleistocene limestones with oolitic and bryozoan facies, overlaid by variable thicknesses of marl and peat, a thin porous crust which filters the surface water percolating to the aquifer.

    Everglades National Park, United States

  • Its substrate is composed of anastomosing mudbanks and unconsolidated calcareous sediments over limestones and is one of the most active areas of modern carbonate sedimentation.

    Everglades National Park, United States

  • Most of the land surface comprises ancient coral reef (about 125,000 years old) now raised above sea level, the rest being even older reef limestones.

    Aldabra Atoll, Seychelles

  • The productive soils of this notable agricultural area are formed mostly from a thin loess mantle over residuum of Mississippian-age limestones.

    Ecoregions of Tennessee (EPA)

  • The open, rolling, valley floor, 600-1000 feet in elevation, is generally 1000 feet and east valleys of Mississippian to Ordovician-age limestones, dolomites, and shales.

    Ecoregions of Tennessee (EPA)

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