POSITIVE INVERSION STRUCTURE OF THE CENTRAL STRUCTURE BELT IN TURPAN-HAMI BASIN

作     者：ZHU Wenbin , MA Ruishi, GUO Lingzhi, SUN Yan, XU Mingjie and HU Dezhao(Department of Earth Sciences, Nanjing University, Nanjing, JS 210093, China) 

作者机构：Department of Earth Sciences Nanjing University Nanjing JS 210093 China 

出 版 物：《Geotectonica et Metallogenia》 (大地构造与成矿学（英文版）)

年 卷 期：2003年第27卷第1期

页      面：179-190页

学科分类：070904[理学-构造地质学] 0709[理学-地质学] 07[理学] 

基　　金：the National Key Laboratory for Oil/Gas Reserve Geology and Development Engineering(Project No: PLN0105) 

主　　题：Turpan-Hami Basin central structure belt growth fault positive inversion structure 

摘      要：The central structure belt in Turpan-Hami basin is composed of the Huoyanshan structure and Qiketai structure formed in late Triassic-early Jurassic, and is characterized by extensional tectonics. The thickness of strata in the hanging wall of the growth fault is obviously larger than that in the footwall,and a deposition center was evolved in the Taibei sag where the hanging wall of the fault is located. In late Jurassic the collision between Lhasa block and Eurasia continent resulted in the transformation of the Turpan-Hami basin from an extensional structure into a compressional structure, and consequently in the tectonic inversion of the central structure belt of the Turpan-Hami basin from the extensional normal fault in the earlier stage to the compressive thrust fault in the later stage. The Tertiary collision between the Indian plate and the Eurasian plate occurred around 55Ma, and this Himalayan orogenic event has played a profound role in shaping the Tianshan area, only the effect of the collision to this area was delayed since it culminated here approximately in late Oligocene-early Miocene. The central structure belt was strongly deformed and thrusted above the ground as a result of this tectonic event.