东昆仑山新生代构造隆升的碎屑矿物裂变径迹记录

选择临近东昆仑山山前的柴达木盆地新生代地层剖面作为主要研究对象，通过系统的砂砾岩薄片分析、阴极发光分析，以及碎屑矿物的裂变径迹年代学分析，研究剖面沉积碎屑组分的变化趋势和突变事件，了解各主要沉积时期物源区的分布及盆地不同时期物源性质的变化特征，重建源区的构造热演化历史，研究东昆仑山造山带新生代的剥露速率及其随时间的变化规律，并结合前人在东昆仑山山体内部所获取的热冷却事件及其冷却速率，追溯东昆仑造山带隆升剥露的演化过程及其与青藏高原形成和隆升事件的演化关系。

This project will focus on the Cenozoic stratigraphic sections of the Qaidam Basin that are adjacent to the east Kunlun Mountains, and research their tendency and mutation events during cenozoic, through identification of glutenite slices, the cathodoluminescence image and the apatite and zircon fission-track dating. And it is the key to understand the provenance distribution area of every major sedimentary period and the changing features of different stages’ provenances, to reconstruction tectonic thermal evolution history, as well as to study the Cenozoic erosional rate of the east Kunlun orogenic belt and the varying parttern of the erosion. Additionally, combining with the cooling event and the cooling rate, which are got from the isotopic chronological studies of rocks in the east Kunlun Mountains, its evolution of uplift erosion and relationship with the evolution of the formation and uplift of the Tibetan Plateau will be reviewed.