A Archaeozoic granulite with an isotope age(Sm-Nd isochoron) of 3450 Ma,was found firstly in Proterozoic Dakendaban Group in eastern north margin of Qaidam Basin.

 
  • 在柴達木盆地北緣東段,首次從古元古代達肯大坂巖群中發(fā)現太古宙麻粒巖,并取得3450Ma Sm-Nd等時(shí)線(xiàn)同位素年齡。
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