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长江三峡贯通问题一直是长江形成演化研究中的焦点和难点问题。运用近年来国内外广泛采用的特征矿物物源示踪法来研究长江三峡的贯通,并选择攀枝花钒钛磁铁矿床中的钛磁铁矿作为示踪矿物进行了探讨。就利用攀枝花型钛磁铁矿来示踪三峡贯通的研究思路、研究方法和实验步骤进行了讨论,结果表明该方法是可行的。并指出随着单颗粒碎屑矿物微区分析技术的迅速发展,利用特征矿物进行长江三峡贯通研究有望取得较好的效果。
The Three Gorges penetration problem has always been the focus and difficult issue in the study of the evolution of the Yangtze River. In this paper, we use the tracing method of characteristic minerals provenance widely used both at home and abroad to study the continuity of the Three Gorges of the Yangtze River and choose titanium magnetite from the Panzhihua vanadium-titanium magnetite as tracer mineral. The research ideas, research methods and experimental procedures of Panzhihua-type titanium magnetite for tracing the Three Gorges are discussed. The results show that this method is feasible. It is also pointed out that with the rapid development of single-particle clastic mineral micro-area analysis technology, it is expected that using the characteristic minerals to carry through the Three Gorges of the Yangtze River can achieve good results.