Collaborative Research: Slip Magnitude, Slip Rate, and Slip Distribution Along the Altyn Tagh Fault System, Northern Tibet

[9725599]藏北阿尔金塔格断裂具有独特的构造特征，建立其运动学历史对于认识印亚碰撞演化具有重要意义。这个特征，可以说是地球上最大的活动大陆内走滑断层系统，是两个端元模型的焦点，这两个端元模型被提出用来描述大陆变形的力学行为：分布缩短和侧向挤压。该项目包括一项为期四年的综合地质、地质年代学和地球物理调查，重点是确定阿尔金塔格断层在1000万年至4年时间尺度上的滑动幅度、速率和分布。主要研究人员将利用地质填图和地质年代学方法确定断层的刺穿点，利用古地磁分析方法研究沿断层可能存在的几条造山沟褶皱，利用GPS测量方法确定断裂带的滑动速率、滑动分布和锁定深度，利用地貌特征填图和宇宙测年方法确定第四纪滑动速率。＊＊＊

9725599 Yin The Altyn Tagh fault in northern Tibet has unique characteristics that make establishing its kinematic history pivotal to understanding the evolution of the Indo-Asian collision. This feature, arguably the largest active intracontinental strike-slip fault system on Earth, is a focal point in both end-member models that have been proposed to describe the mechanical behavior of continental deformation: distributed shortening and lateral extrusion. This project involves a four year, integrated geological, geochronological and geophysical investigation that will focus on the determination of the magnitude, rate, and distribution of slip on the Altyn Tagh fault at time scales between 10,000,000 years to 4 years. The principal investigators will utilize geologic mapping and geochronology to establish piercing points, use paleomagnetic analysis to investigate several possible oroclinal folds along the fault, undertake a GPS survey to establish the slip rate, slip distribution and locking depth along the fault zone, and use mapping and cosmogenic dating of geomorphological features to establish Quaternary slip rates. ***