论文部分内容阅读
利用磷灰石裂变径迹技术并结合库车坳陷的沉积和变形特征,对南天山的隆升和去顶作用过程进行详细的研究.南天山在中新世早期就开始了现代天山形成的隆升事件,根据样品的磷灰石裂变径迹结果,其隆升年龄为17～25 Ma;而且此隆升事件是一快速隆升事件,隆升速率达到138.8～198.8 m/Ma.中新世南天山隆升的南部边界并不是前人所认为的北部古生代地层和南部中新生代地层之间的冲断层,而是在南部的中新生代地层中.在库车坳陷的阳霞地区,隆升的界线位于吐格尔明背斜核部的韧性剪切带.通过库车坳陷的新生代沉积和变形特征的分析,提出了天山中新世以来的隆升与库车坳陷的沉积和变形特征存在很好的耦合关系.
Using the apatite fission track technique combined with the sedimentary and deformation characteristics of the Kuqa Depression, the process of uplift and de-toping of the southern Tianshan Mountains has been studied in detail.The southern Tianshan began the formation of modern Tianshan in the early Miocene According to the results of apatite fission track, the uplift age is 17-25 Ma, and the uplift event is a rapid uplift event with an uplift rate of 138.8-198.8 m / Ma. The southern boundary of the uplifted southern Tianshan Mountains is not the thrust fault between the Paleozoic North and the Mesozoic Mesozoic strata previously thought to be in the Mesozoic-Cenozoic strata in the southern part of the Yangxia region in the Kuqa Depression , The uplift of which is located in the ductile shear zone of the core of the Dugliming anticline.According to Cenozoic sedimentation and deformation features of the Kuqa Depression, the uplift of the Tianshan Mountains since the Miocene and the Kuqa Depression The sedimentary and deformation characteristics of the existence of a good coupling.