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单词 oolite
释义

Definition of oolite in English:

oolite

noun ˈəʊəlʌɪtˈoʊəˌlaɪt
mass nounGeology
  • 1Limestone consisting of a mass of rounded grains (ooliths) made up of concentric layers.

    〔地质〕鲕粒岩

    Example sentencesExamples
    • Greensand, coal, rock salt, coral limestone, oolites, and boulder clays are examples of indicators of depositional environments.
    • At Taskent the upper layer of oolite is more resistant but sharply truncated beneath stromatolites of the overlying Gevne Formation.
    • The sample was taken from a thin limestone lens with phosphatic oolites within the phosphatic greensand.
    • In the process of being buried under other sediments, these ooids can fuse into a solid mass of sedimentary rock called oolite.
    • However, in the northeastern area of the outcrop, only the lowermost 0-2 m consist of calcareous sandstone, with oolites, biothermal limestones and crinoidal limestones characterizing the remainder.
    1. 1.1
      another term for oolith

Derivatives

  • oolitic

  • adjective əʊəˈlɪtɪkˌoʊəˈlɪdɪk
    Geology
    • His fieldwork, beginning over 60 years ago in the Svalbard Archipelago, Norway, and Greenland, recognized obvious glacial marine deposits bounded above and below by oolitic limestones that suggested tropical deposition.
      Example sentencesExamples
      • The carbonate products are made up of oolitic grains, oolitic gravels, benthic foraminifers and crinoid ossicles, in decreasing order of abundance.
      • Cycles are common, with deeper water bioclastic limestones at their base, followed by shallow marine oolitic limestones and lagoonal calcareous mudstones, with palaeokarstic horizons representing emergence at their top.
      • Suitable white wine soil tends to have more oolitic limestone and less marl in its make-up.
      • An exception is the minor cyclicity noted in Chadian oolitic limestones of South Wales, but these are restricted geographically, and it is likely that they reflect local controls rather than eustatic ones.

Origin

Early 19th century: from French oölithe, modern Latin oolites (see oo-, -lite).

Definition of oolite in US English:

oolite

nounˈoʊəˌlaɪtˈōəˌlīt
Geology
  • 1Limestone consisting of a mass of rounded grains (ooliths) made up of concentric layers.

    〔地质〕鲕粒岩

    Example sentencesExamples
    • In the process of being buried under other sediments, these ooids can fuse into a solid mass of sedimentary rock called oolite.
    • However, in the northeastern area of the outcrop, only the lowermost 0-2 m consist of calcareous sandstone, with oolites, biothermal limestones and crinoidal limestones characterizing the remainder.
    • At Taskent the upper layer of oolite is more resistant but sharply truncated beneath stromatolites of the overlying Gevne Formation.
    • Greensand, coal, rock salt, coral limestone, oolites, and boulder clays are examples of indicators of depositional environments.
    • The sample was taken from a thin limestone lens with phosphatic oolites within the phosphatic greensand.
    1. 1.1
      another term for oolith

Origin

Early 19th century: from French oölithe, modern Latin oolites (see oo-, -lite).

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更新时间:2024/10/19 13:25:21