基于特征矿物示踪的长江三峡贯通研究构想  

Research concept of formation of Yangtze Three Gorges based on diagnostic minerals tracing

作　　者：雷文大[1] 李长安[1] 张玉芬[2] 邵磊[1] 

机构地区：[1]中国地质大学(武汉)地球科学学院,湖北武汉430074 [2]中国地质大学(武汉)地球物理与空间信息学院,湖北武汉430074

出　　处：《人民长江》2009年第9期55-58,共4页Yangtze River

基　　金：国家重点基础发展研究计划“973计划”(2004CB720204);国家自然科学基金(40672206,40771213)

摘　　要：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。Through the ages,the origin of Three Gorges is a focus and puzzle in the research of the formation and evolvement of the Yangtze River.This paper presents a research for the origin of Three Gorges by using the approach of diagnostic minerals tracing which has been well developed globally in recent several years.In the research,titanomagnetite is selected as the key mineral for the tracing work in the deposit of Panzhihuan mining area.Based on the tracing of this mineral,the idea,the approach and the testing are discussed in this paper.And the result proves the minerals tracing is completely feasible.At last,the author indicates with the rapid development for micro division technology of single grain mineral fragment,diagnostic minerals tracing could give more helps to the research about the formation of the Yangtze River Three Gorges for obtaining satisfactory results.

关 键 词：三峡贯通 特征矿物 钛磁铁矿 攀枝花 长江 

分 类 号：P62[天文地球—地质矿产勘探]