flowstone

常见例句

• We have carried out ~230Th/~234U dating on intercalated calcite samples. The results show that the capping flowstone layer is of an age of 130 ka, and the second one 218 ka.
  本文的兩個碳酸鹽巖樣品的~(230)Th/~(234)U年代表明,該地點表層鈣板在約130ka開始形成,第二鈣板層形成的年代爲距今218ka。
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