富有机质地质样品Re-Os同位素体系研究进展

Re-Os同位素的研究在过去几十年取得了重要进展。Re、Os能够在各种不同类型的富有机质地质样品中富集,Re-Os同位素体系在各种富有机质样品的研究已成为同位素地球化学研究领域一个新的热点。文章介绍了Re-Os同位素体系研究应用于富有机质地质样品研究的原理及其地质样品种类,从风化淋滤和熟化两方面对Re-Os同位素体系的封闭性进行了说明,并且结合实例论述了Re-Os同位素体系应用于富有机质地质样品的重大意义,还对不同类型富有机质样品的采样和溶样方法进行了归纳。此外,还提出了当前富有机质地质样品Re-Os同位素研究亟待解决的问题,指出富有机质地质样品Re-Os同位素分析将成为解决地质难题一种新的有力工具。

Advances in the study of the Re-Os isotopic system of organic-rich samples

In the past decades,significant advances have been made in the research on Re-Os isotopes.Re and Os can be concentrated from various organic-rich geologic samples,and hence the study of the Re-Os isotopic system in these samples has become a new hot spot in the field of isotope geochemistry.The organic matter,which is contained in organic-rich sedimentary rocks,is capable of absorbing and enriching Re and Os from the seawater.With the diagenesis of these organic-rich sedimentary rocks,the Re-Os isotopic sys...