Archean

听听怎么读
英 [ɑ:ˈkiən]
美 [ɑrˈkiən]
是什么意思
  • adj.

    太古代的;

  • 英英释义

    Archean[ ɑ:'ki:ən ]

    • n.the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life

      同义词:Archean eonArchean aeonArcheozoicArchaeozoicArcheozoic eonArchaeozoic aeon

    • adj.used of the earliest known rocks

      同义词:archaean

    学习怎么用

    双语例句

    用作形容词(adj.)
    1. On seeing the rocks for himself, Fedo, who had just spent a year mapping Archean rocks in Zimbabwe, became extremely skeptical.
      另一方面,费多由于才刚在辛巴威花了一年时间测定太古代的岩石,现在他亲眼看见这里的岩石,立刻感到非常怀疑。

    权威例句

    Archean molecular fossils and the early rise of eukaryotes.
    Calibration of Sulfate Levels in the Archean Ocean
    Effect of steeper Archean geothermal gradient on geochemistry of subduction-zone magmas
    Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life
    Archean crustal evolution in the northern Yilgarn Craton: U–Pb and Hf-isotope evidence from detrital zircons
    Martin, H. Adakitic magmas: modern analogues of Archean granitoids. Lithos 46, 411−429
    Archean blocks and their boundaries in the North China Craton: lithological, geochemical, structural and P – T path constraints an...
    Mass-independent fractionation of sulfur isotopes in Archean sediments: strong evidence for an anoxic Archean atmosphere.
    A model for Trondhjemite-Tonalite-Dacite Genesis and crustal growth via slab melting: Archean to modern comparisons
    Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust
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