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地质论评  2007 

铂族元素作为地球化学指示剂有关问题讨论

Keywords: 铂族元素地球化学分配系数指示剂

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Abstract:

铂族元素在研究地球化学过程中发挥着越来越重要的示踪作用。根据铂族元素在不同圈层中的分布,可以探索地球的形成历史和地外撞击事件。根据铂族元素之间的分异性,可用来研究岩浆的部分熔融程度、岩石的形成过程以及大地构造环境的判别等。然而,多年来,由于分析手段和分析方法等的限制,对铂族元素在地质作用过程中的化学行为的认识尚欠深入,对其作为地球化学指示剂的研究还存在诸多问题,许多现象尚不能得到很好的解释。本文提出,应加强地质样品中超痕量铂族元素的高精度分析方法研究和铂族元素在地质作用过程中分异行为、分异规律的研究。

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