念青唐古拉—雅鲁藏布江中段区域地球化学特征及成矿环境  

Regional Geochemical Feature and Ore-forming Surroundings in The Middle Part of Nyenchen Tanglha Range to Brahmaputra

作　　者：任天祥[1] 孙忠军[1] 向运川[1] 

机构地区：[1]中国地质科学院物化探研究所,河北廊坊065000

出　　处：《矿物岩石地球化学通报》2002年第3期185-186,共2页Bulletin of Mineralogy, Petrology and Geochemistry

摘　　要：依据区域化探资料编制的 1∶5 0 0万全国地球化学图 ,研究了西藏念青唐古拉—雅鲁藏布江中段区域地球化学特征。发现Cr、Cu、Au、Pb、Zn、Ag、U、Th、W、Sn等成矿元素的分布和浓集明显受构造环境和岩浆活动的控制 ,由南向北从雅鲁藏布缝合带→拉萨地块→改则 那曲造山带这些元素具有明显分带现象。这些元素的异常在构造带上也成群成带分布 ,具有良好找矿前景。已划分出 13个战略找矿靶区。The research on regional geochemical feature in the middle part of Nyenchen Tanglha range to Brahmaputra was done based on 1∶5000000 scale geochemical map generated by regional geochemical exploration data in China. It was found that Cr,Cu,Au,Pb,Zn,Ag,U,Th,W,Sn etc. metallogenetic element anomalies were controled by structural feature and magmatic activity. There is a significant anomaly zoning of metallogenetic element from Brahmaputra suture zone through Lhasa block to Grz-Nagqu orogenic zone. Furthermore, the element anomalies appear in cluster and zoning in the tectonic zone, showing a great foreground. The 13 strategic exploration targets were sketched. The region may be a new large-scale metallogenetic province.

关 键 词：雅鲁藏布江 成矿环境 区域地球化学特征 元素分带 构造环境 岩浆活动 找矿靶区 

分 类 号：P595[天文地球—地球化学]