阿尔泰造山带的构造运动  

THE OROGENY IN THE ALTAIDES

作　　者：曲国胜[1] 何国琦[2] 

机构地区：[1]国家地震局地质研究所 [2]北京大学地质系

出　　处：《地质学报》1992年第3期193-205,共13页Acta Geologica Sinica

基　　金：国家重点攻关<三○五>项目额尔齐斯构造带构造演化与成矿系列研究课题

摘　　要：变形式样、建造类型及同位素年代学数据研究表明,阿尔泰造山带依次经历了5期构造运动,即:喀纳斯运动,形成白哈巴组(O_3)与哈巴河群(Z—O_2)间的角度不整合;大桥运动(S_3—D_(1—2)),形成海西早期类拗拉谷拉张陆壳区;阿尔泰运动(海西中晚期)导致陆内斜向碰撞并形成大型剪切弧型推覆构造系,为强烈造山阶段;泛阿尔泰运动(海西末至印支期)导致山脉整体隆起及剥蚀;喜马拉雅运动,导致新生代以来造山带各断裂系的复活及断块隆起。Based on studies of styles of structural deformation types of sedimental formations and isotopic age data, the orogeny in the Alaides can be divided into five stages according to the time sequences: (1) the Kanas orogeny, which represents the early compression event as evidenced by the angular unconformity between the Habahe Group (Z-O_2) and the Baihaba Group (O_3); (2) the Daqiao orogeny, which represents the extensional tectonothermal event, giving rise to the aulacogen-like structures and continental rifts during the late Caledonian-early Hercynian (S_3-D_(1-2)); (3) the AItay orogeny, which is a strong compressive orogeny and can be subdivided into four tectonic phases: Qongkur-Kuwey, Altay, Dahantur, and Ertix, accompanied by the oblique intracontinental collision and shear arc-shaped thrust systems in the Altaides during the middle and the late Hercynian; (4) the pan-Altay orogeny, which represents the uplifting and erosion events that occurred during the terminal-Hercynian and the Indo-Sinian; (5) the Himalayan movement, which is another compression orogeny, resulting in the rejuvenation of fault systems and block uplift of the Altaides since the Cenozoic. The tectonic environments of the above-mentioned orogenies, which changed from continental rifting to strong compression and then to uplifting and erosion, forming a perfect Wilson cycle.

关 键 词：阿尔泰 造山带 构造运动 

分 类 号：P542.2[天文地球—构造地质学]