西天山那拉提构造带及其找矿前景  

ON NALATI TECTONIC BELT OF WESTERN TIANSHAN IN CHINA AND ITS PROSPECTS

作　　者：吴山[1] 何政伟[1] 孙传敏[1] 陶专[1] 吴华 刘显凡[1] 丁益民[1] 刘兴德[1] 王晓地[1] 

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]新疆地勘局第六地质大队

出　　处：《成都理工学院学报》2002年第3期252-257,共6页Journal of Chengdu University of Technology

基　　金：中国地质调查局国土资源大调查项目 (2 0 0 1 0 2 0 0 63 0 0 3 )

摘　　要：那拉提构造带位于天山西段伊犁盆地与南天山之间 ,出露宽度约 2 5 km,由早元古代片岩、片麻岩及混合岩、混合花岗岩组成 ;深层次韧性剪切带及叠加中 -浅层次剪切带发育 ;那拉提构造带南缘断裂明显 ,南侧为古生代浅变质黑色岩系 ;构造带北缘韧 /脆性剪切带宽度大 ,两侧岩石劈理化后易于混淆 ,故界线不明显。那拉提构造带基本地质特征可与邻国中天山对比 。Nalati tectonic belt located between the Ili Basin and the South Tianshan of western Tianshan is 25 km wide, and it is composed of earlier Proterozoic schist, gneiss, migmatite, and migmatitic granite. In this area, the ductile shear zone in the deep level and the superposed ductile/brittle shear zone in the medium shallow level are quite developed. The fault zone at the south edge of the Nalati tectonic belt is apparent , and the Paleozoic low metamorphic black complex is distributed over the south of the fault. The ductile/brittle share zone at north edge of the tectonic belt is wide, and the cleavable rocks in both sides of the fault are very confusable, therefore the boundary is not distinct. The essential geological characteristics of the Nalati tectonic belt are comparable with middle Tianshan in the neighboring countries and the geological conditions in the belt area show that it is possible to find large scale gold deposits similar to the neighboring countries.

关 键 词：西天山 那拉提构造带 混合岩 剪切带 金矿床 

分 类 号：P54[天文地球—构造地质学]