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青藏高原在以时间为坐标的隆升过程中,高原的范围、高度都是呈阶段性递增的。随着青藏高原的构造隆升,在高原的内部和外围发育了众多的沉积盆地,在这些沉积盆地中详细地记录了青藏高原的隆升过程。高原北部盆地的演化显示出向北递进增长的特征,以南北挤压为动力背景的北部前陆盆地演化代表了盆地对高原周缘造山带的响应关系:金沙江缝合带、昆仑山、祁连山的新生代逆冲抬升的时间分别为53Ma、46Ma和29.5Ma。对高原南北盆地-造山带的构造演化对比发现:祁连山和高喜马拉雅的逆冲时间相同,说明青藏高原在渐新世基本定型。
During the uplift of the Tibetan Plateau in time, the range and altitude of the plateau are gradually increasing. With the tectonic uplift of the Qinghai-Tibet Plateau, a large number of sedimentary basins are developed in and around the plateau, and the uplift of the Qinghai-Tibet Plateau is recorded in detail in these sedimentary basins. The evolution of the northern plateau of the plateau shows the characteristics of advancing northward. The evolution of the northern foreland basin with the north-south crust as a dynamic background represents the response of the basin to the peripheral orogen of the plateau: the freshmen of the Jinshajiang suture, Kunlun Mountains and Qilian Mountains On behalf of the thrust up time 53Ma, 46Ma and 29.5Ma. Comparison of the tectonic evolution of the northern-northern basin-orogenic belt in the plateau reveals that the same thrust time in the Qilian Mountains and the high Himalayas shows that the Qinghai-Tibet Plateau was basically shaped during the Oligoceses.