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本文主要通过磷灰石裂变径迹测年结果结合温度-时间热模拟反演的研究,探讨准噶尔盆地周缘造山带的抬升-剥露作用过程及其差异性特征。研究结果表明,准噶尔周缘造山带自晚三叠世至新近纪至少经历三次大的抬升-剥露事件,结合样品位置分析,推测准噶尔盆地周缘造山带的抬升-剥露作用具有明显不均一特征。始于晚三叠-早侏罗世的山脉抬升作用范围有限,仅局限于准噶尔东北缘;但是,发生在中-晚白垩世(~115~95Ma)的这期构造抬升作用在盆地周缘的所有山系都有记录;古近纪早期(~60~50Ma)在准噶尔盆地北缘有一期隆升事件,但该事件也仅仅局限于盆地北缘;新近纪~25Ma 以来发生在巴里坤(博格达山)的局部抬升冷却事件,仅仅局限于天山北缘,而此时准噶尔盆地的东西两侧山脉可能相对稳定,推测该期抬升事件应是印-亚碰撞的远程效应在天山地区的构造表现。
In this paper, mainly through the apatite fission track dating results combined with temperature-time thermal simulation inversion study to explore the Junggar Basin, the orogenic belt uplift - stripping process and its differences in characteristics. The results show that the Junggar Periphery orogenic belt experienced at least three major uplift-detritus events from the Late Triassic to the Neogene, and the analysis of the sample location suggests that the uplift-dewing of the peripheral orogenic belt in the Junggar Basin has obvious heterogeneity. The range of uplift from the Late Triassic to Early Jurassic was limited and limited to the northeastern margin of Junggar; however, the tectonic uplift that took place in the mid-late Cretaceous (~ 115 ~ 95 Ma) There is a record of the mountains; in the early Paleogene (~ 60 ~ 50Ma), there was an uplifting event in the northern margin of the Junggar Basin, but the event was also confined to the northern margin of the basin; occurred in Barkol The local uplift cooling event is only limited to the northern margin of Tianshan Mountains. However, the eastern and western mountains of the Junggar Basin may be relatively stable at this time. It is speculated that this uplift event should be the tectonic manifestation of the long-range effect of Indian-Asian collision in the Tianshan Mountains.