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巴楚断隆的形态、成因及边界断裂与其南北两侧前陆凹陷的形成戚息相关。在印度板块向欧亚板块俯冲的大背景下 ,巴楚前缘断隆受西南坳陷和阿瓦提凹陷的影响 ,新生代时构造体制发生反转 ,边界向南北迁移。根据其发育过程特征 ,作者用复合前缘隆起两端迁移模式对复合前缘隆起独特的构造发育史进行了解释 :即三叠纪以来岩石圈各圈层同步挠曲变形。随着挤压应力场的增大 ,巴楚隆起在挠曲基础上不断抬升 ,形成几条大型断裂带。巴楚断隆作为一个整体沿着这几条深断裂发生剪切滑动 ,平面上表现为向冲断带迁移。在宁静期岩石圈回跳 ,整体向下滑动 ,发育负反转构造 ,平面上为向隆起轴部的迁移。前缘隆起向南北凹陷迁移时可能会在前缘隆起上出现局部伸展体制。
The shape and genesis of the Bachu fault and the boundary faults are related to the formation of foreland potholes on both north and south sides. Under the background of subduction of the Indian plate to the Eurasian plate, the fault rupture in the front of Bachu was affected by the southwestern depression and the Awati depression. During the Cenozoic, the structural system reversed and the boundary migrated to the north and south. According to the characteristics of its development process, the author explained the unique tectonic history of the composite frontlift by using the migration pattern of the composite frontal uplift: that is, the synchronic deflection of the lithosphere since the Triassic. With the increase of compressive stress field, the Bachu uplift continuously rises on the basis of flexure and forms several large fault zones. The Bachu fault as a whole shear and slippage along these deep faults, and the plane shows the migration to the thrust belt. During the quiet period, the lithosphere bounced back and slid downwards as a whole, developed a negative inversion structure and migrated to the uplift shaft in the plane. The migration of the frontal uplift to the north-south depression may result in the local extension of the frontal uplift.