论文部分内容阅读
青藏高原的形成和隆升问题是十分复杂的热点问题 ,受到了全球地质学者的普遍关注。高原的形成是印度板块和欧亚板块碰撞挤压导致地壳增厚、挤压抬升、地面剥蚀均衡和深部热作用的共同结果。目前青藏高原隆升过程是多阶段、非均一、隆升速率由慢到快、更新世 (约 3Ma)以来进入快速隆升期的认识日趋达成共识 ,但在隆升机制方面存在着多种模式 (三阶段模式、叠加压扁热动力模式、拆沉模式、陆内俯冲模式和断块隆升模式等 )的解释。随着来自地质、地球物理和地球化学等方面的资料积累、测量仪器精度的提高以及数学模拟方法的改进 ,对高原的形成和隆升机制将会有更为合理的解释
The formation and uplift of the Qinghai-Tibet Plateau is a very complicated hot issue, which has attracted the widespread attention of global geologists. The formation of plateaus is the common result of crustal crustal thickening, crustal uplift, balance of ground erosion and deep thermal action caused by the collision and extrusion of Indian plate and Eurasian plate. At present, the uplift process of the Qinghai-Tibet Plateau is multi-stage and heterogeneous. There is an increasingly common understanding that the uplift rate changes from slow to fast and the Pleistocene (about 3Ma) into the rapid uplift period. However, there are many modes in the uplift mechanism (Three-stage mode, superimposed flattened thermo-dynamic mode, detachment mode, intracontinental subduction mode and fault uplift mode). With the accumulation of data from geology, geophysics and geochemistry, the improvement of the accuracy of measuring instruments and the improvement of mathematical simulation methods, there will be a more reasonable explanation of the plateau formation and uplift mechanism