甘孜—理塘断裂带北段新生代构造特征及金矿成矿作用  

Cenozoic tectonic movement and its relationship withgold mineralization in the northern segment of the Garzê-Litang fault belt

作　　者：付小方[1] 应汉龙[2] 

机构地区：[1]四川省地质调查院,四川成都610081 [2]中国科学院地质与地球物理研究所,北京10029

出　　处：《中国地质》2003年第4期413-418,共6页Geology in China

基　　金：国家重点基础发展规划项目(G1999043203)资助。

摘　　要：甘孜—理塘断裂带自古生代以来经历了一系列复杂的演化过程,为一规模宏大、结构复杂并受到新生代喜马拉雅期逆冲推覆和左行平移走滑剪切作用强烈改造肢解的蛇绿混杂岩带。金矿成矿主要与新生代喜马拉雅期逆冲推覆和平移走滑以及成矿期后的表生氧化作用有关。沿该断裂带广泛发育水热活动,显示了现代热液成矿作用仍在进行中。重视新生代喜马拉雅期构造活动规律的研究对该区找矿具有重要意义。The Garzê-Litang fault belt has experienced a series of complex evolutionary processes since the Paleozoic and is a large-scale, structurally complex ophiolitic mélange belt that has been strongly reworked and dismembered by overthrusting and sinistral strike-slip shear during the Cenozoic Himalayan orogeny. Gold mineralization is mainly associated with overthrusting, strike-slip motion of the fault belt and post-mineralization supergene oxidationn during the Himalayan orogeny. Hydrothermal activity is widely developed along the fault belt, showing that modern hydrothermal mineralization is just taking place. The study of the regularity of the Himalayan tectonic movement is of great significance for mineral prospecting in the study area.

关 键 词：断裂带 新生代 构造特征 金矿 成矿作用 

分 类 号：P542.3[天文地球—构造地质学] P618.51[天文地球—地质学]