塔里木盆地东南缘新生代断裂系统

The Cenozoic Fault System of Southeastern Tarim Basin

结合野外地面地质调查成果,并通过对地震、大地电磁等地球物理资料的精细解释构建了塔里木盆地东南缘新生代断裂系统。塔东南新生代断裂系统可以划分为三大体系:阿尔金断裂体系、车尔臣断裂体系和西昆仑断裂体系。阿尔金北缘断层在存在走滑性质的同时,更多的表现为向北西的强烈冲断;车尔臣断裂体系由车尔臣断裂及次级断层和一系列反冲断层组成,除表现为向北西冲断外,还具有左行走滑特征;西昆仑断裂体系主要由自南向北的冲断的逆冲断层组成,在与阿尔金断裂交汇处,受阿尔金左行走滑的影响呈弧形弯曲。

Combined with the field geologic investigation, and the detailed interpretation of seismic, MT and other geophysical information, the fault system has been constructed in the southeastern Tarim basin. The cenozoic fault system of southeastern Tarim basin can be divided into three systems： the Ahun fault system, Che＇erchen fault system and the West Kunlun fault system. The Altun fault system is dominated by NW trending thrust which is accompanied by strike-slip. The Che＇erchen fault system was composed of a series of secondary fault and thrust faults, which characterizes the northwestward thrust and the sinistral strike-slip. The West Kunlun fault system mainly consists of thrust faults which thrust from south to north. Near the intersection between the Altyn Mountain and the west Kunlun fault system, the later was curved by the impact of the former sinistral strike-slip.