Archean
英 [ɑ:ˈkiən] 美 [ɑrˈkiən]

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

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