沉积盆地物源体系分析方法及研究进展

Approaches and prospects of provenance system analysis in sedimentary basins

物源体系分析是沉积盆地研究的重要内容之一,它对于研究沉积盆地与造山带的耦合关系及二者的相互作用具有重要意义。目前,许多学者提出了多种物源分析方法,但尚未形成体系。在此基础上,主要从物源区位置的确定、物源区母岩特征的分析、搬运路径的确定及物源区构造背景的分析等4个方面对这些方法进行了概括和总结,并建立了物源分析的体系框架。研究认为:在不同的沉积盆地中,根据各种地质资料的丰度,只有采取定性分析与定量分析相结合,多种分析手段相互补充的分析思路,才能得出科学合理的物源体系特征。

Provenance analysis is one of the most important aspects in the research of sedimentary basins, and it is of great significance in studying the relationship and the interaction between basins and hills. At present, lots of experts put forward many kinds of analytic procedure, but they can not constitute a system. This paper summarized the study ways from four aspects: the determination of source area, the analysis of parent rock features in the source area, the determination of moving path and the tectonic setting of source area, and established a frame of approaches about provenance system. In different sedimentary basins, according to the abundance of geological data, qualitative analysis and quantitative analysis should be combined and many kinds of study ways should be made up for each other. Only in this way, the conclusion of the characteristics of provenance system would be scientific and reasonable.