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盆山结合部的浅-深结构样式是进行陆内造山动力学研究与讨论的重要依据.2007年,在喀什东的天山与塔里木盆地之间的过渡带上,完成了一条近南北向的长度为121km的主动源深地震反射剖面,显示出盆山结合部现今地壳尺度的构造格架.剖面南部呈现出10～12km巨厚的沉积盖层,沉积盖层内发育滑脱断层;盆山结合部多排隆起构造以及天山山前上地壳显现出向北倾斜的断裂与地表地质观察吻合;盆山结合带展现出滑脱与逆冲推覆构造相关的断层褶皱;与塔里木盆地稳定沉积层相比,在南天山浅、中层地层受到强烈的变形改造,导致地层比较破碎,反射变弱、连续性较差;时间剖面上可以追踪到比较连续的Moho反射,从南向北有加深的趋势.深地震反射剖面揭露出的西南天山与塔里木盆地的这些浅-深构造,展现出塔里木盆地盖层向南天山滑脱与南天山向塔里木盆地逆冲推覆的特征,反映出陆内汇聚下的盆山耦合关系.
The shallow-deep structural style of the basin-mountain junction is an important basis for the study and discussion of intracontinental orogenic kinetics.In 2007, on the transitional zone between the Tianshan-Tarim Basin in Kashgar East, a near-north- The active deep seismic reflection profile of 121 km shows the present-day crustal scale tectonic framework of the basin-mountain junction, with a sedimentary caprock of 10 ~ 12 km thick in the south of the section and detachment faults developed in the sedimentary caprock. And the Tianshan piedmont upper crust shows a northward-sloping fault consistent with surface geological observation. The basin-mountain belt shows slippage and faulting associated with thrust nappe structures. Compared with the stable sedimentary layers in the Tarim Basin, The strata are subject to strong deformation and deformation resulting in crustal stratigraphy, weak reflections and poor continuity. Moho reflections can be traced relatively continuously in the time profile, with a deepening trend from south to north.The deep seismic reflection profile reveals the southwest These shallow-deep tectonics in the Tianshan and Tarim basins show the slippage of the cap rock of the Tarim Basin to the south Tianshan and the thrusting of the South Tianshan to the Tarim Basin Characteristics, reflecting the convergence of the basin-mountain coupling relationship.