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

合作研究：藏北阿尔金断裂带滑移幅度、滑移速率和滑移分布

• 批准号: 9725599
• 负责人: An Yin
• 金额: $ 55万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-15 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9725599&HistoricalAwards=false
• 关键词: Collaborative; Research; Slip; Magnitude; Rate

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. ***

小行星9725599 位于西藏北方的阿尔金断裂具有独特的特征，这使得建立其运动学历史对于理解印度-亚洲碰撞的演化至关重要。 这一特征可以说是地球上最大的活跃陆内走滑断层系统，是两种端元模型的焦点，这些模型被提出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、年代学和地球物理调查，重点是确定阿尔金断层在10，000，000年至4年时间尺度上的滑动幅度、速率和分布。 主要调查人员将利用地质测绘和地质年代学确定穿透点，利用古地磁分析调查沿断层沿着的几个可能的造山褶皱，进行全球定位系统调查以确定沿断层带沿着的滑动速率、滑动分布和锁定深度，并利用地貌特征的测绘和宇宙成因年代测定来确定第四纪滑动速率。 ***