Determination of the Altyn Tagh strike-slip fault basin and its relationship with mountains  

作　　者：Li Haibing Yang Jingsui Shi Rendeng Wu Cailai P.Tapponnier Wan Yusheng Zhang Jianxin Meng Fanchong 

机构地区：[1]Institute of Geology,Chinese Academy of Geological Sciences,100037,Beijing,China [2]Institut de Physique du Globe,4 Place Jussieu,75252,Paris,Cedex 05,France

出　　处：《Chinese Science Bulletin》2002年第7期572-577,共6页

基　　金：This work was supported by the State Key Basic Research Development Project (Grant No. G1998040800).

摘　　要：A special extended basin topography is developed in the middle segment of the Altyn Tagh Fault Zone. The ratio of its length to width is over 50. The long boundaries at the two sides of the basin are controlled by the straight normal faults with strike-slip component. Within the basin, the Cenozoic strata are spread. The Altyn Tagh main fault goes through the basin, and a series of strike-slip topography was formed within the basin. The reverse thrust structures were formed at the two sides of the center of the basin, thus making the geological bodies composed of old metamorphic rocks at the two sides of the basin extrude vertically, and forming the extended massif (mountain) at the sides of the basin and parallel to the basin. This special topography was called the strike-slip fault basin. The giant extended strike-slip fault basin began to form during Pliocene, and its topography was basically formed during the late Pleistocene. It is the special topography formed during the strike-slip deformationA special extended basin topography is developed in the middle segment of the Altyn Tagh Fault Zone. The ratio of its length to width is over 50. The long boundaries at the two sides of the basin are controlled by the straight normal faults with strike-slip component. Within the basin, the Cenozoic strata are spread. The Altyn Tagh main fault goes through the basin, and a series of strike-slip topography was formed within the basin. The reverse thrust structures were formed at the two sides of the center of the basin, thus making the geological bodies composed of old metamorphic rocks at the two sides of the basin extrude vertically, and forming the extended massif (mountain) at the sides of the basin and parallel to the basin. This special topography was called the strike-slip fault basin. The giant extended strike-slip fault basin began to form during Pliocene, and its topography was basically formed during the late Pleistocene. It is the special topography formed during the strike-slip deformation process of the Altyn Tagh Fault Zone and under both transpression and uplifting.

关 键 词：STRIKE-SLIP FAULT BASIN TRANSPRESSION UPLIFTING Altyn Tagh FAULT Zone. 

分 类 号：P542[天文地球—构造地质学]