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hard limestone

См. также в других словарях:

  • Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… …   Wikipedia

  • limestone — ► NOUN ▪ a hard sedimentary rock composed mainly of calcium carbonate …   English terms dictionary

  • Limestone — For other uses, see Limestone (disambiguation). Limestone Sedimentary Rock Limestone in Waitomo District, New Zealand Composition …   Wikipedia

  • hard water — water with high concentrations of dissolved calcium and magnesium salts, usually found in limestone areas …   Dictionary of ichthyology

  • limestone — noun a hard sedimentary rock composed mainly of calcium carbonate, used as building material and in cement …   English new terms dictionary

  • Carboniferous limestone — is a type of limestone rock, which was laid down in Great Britain and Ireland in the Dinantian stage of the Carboniferous period. It was formed between 363 and 325 million years ago. It is one of the three most common types of limestone found in… …   Wikipedia

  • List of types of limestone — The following is a list of various types of limestone according to location.EuropeBritish Isles* Carboniferous limestone * Blisworth Limestone * Ketton Stone * Portland limestone ** Portland Admiralty Roach ** Portland Bowers Basebed ** Portland… …   Wikipedia

  • Ocala Limestone — Stratigraphic range: Eocene Type Geological formation Underlies Suwannee Limestone (Oligocene) Overlies Avon Park Formation Thickness Lafayette Su …   Wikipedia

  • Blisworth Limestone — The Blisworth Limestone is a stratum of limestone of the Bathonian stage, found in the Jurassic ridge which extends north and south through England. It was laid down in the shallows of the Jurassic sea and is part of the more widely defined Great …   Wikipedia

  • Corallian Limestone — is a coralliferous sedimentary rock, laid down in Jurassic times. It is a hard variety of coral rag . Building stones from this geological structure tend to be irregular in shape. It is often found close to seams of Portland Limestone (e.g.… …   Wikipedia

  • Lincolnshire limestone — The Lincolnshire limestone is a feature of the Inferior Oolite Series of the (Bajocian) Middle Jurassic strata of eastern England. It was formed around 165 million years ago, in a shallow, warm sea on the margin of the London Platform and has… …   Wikipedia

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