iridium anomaly

常见例句

双语例句

• The dating of the stable isotope of the egg shell and the enrichment anomaly of Iridium is used to inquire into the extinction of the dinosaurs.
  利用测定蛋壳的稳定同位素和铱元素富集异常探讨恐龙绝灭；
• After discovery of iridium anomaly in Early Cambrian stone coal in Hunan province, scientistsbegan to guess the possibility of a meteorite impact event from geochemical aspects.
  湖南省早寒武世石煤层的铱异常发现之后，人们纷纷从地球化学方面推测一次陨石撞击事件的可能性。

权威例句

• Eubrontes giganteus, for example, is there a mere 10, 000 years after the iridium anomaly.
  ECONOMIST: The rise of the dinosaurs
• Both an iridium anomaly and a fern spike appear in rocks at the end of the Triassic, too.
  ECONOMIST: The rise of the dinosaurs
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