Displacement Rates and Paleoseismicity of the Eastern Kunlun Fault: Implications for the Dynamical Role of Strike-slip Faults During Intracontinental Deformation

东昆仑断裂的位移速率和古地震活动：对陆内变形过程中走滑断层动力学作用的启示

• 批准号: 0000503
• 负责人: Eric Kirby
• 金额: $ 7.2万
• 依托单位: Kirby, Eric
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000503&HistoricalAwards=false
• 关键词: Displacement; Rates; Paleoseismicity; Eastern; Kunlun

0000503KirbyThis project will investigate the active displacement field surrounding the eastern termination of the Kunlun Fault, in western Sichuan and Gansu Provinces, China. The study is aimed at furthering understanding of the role that large (1000 km) strike-slip faults play in active intracontinental deformation in Asia. Unresolved issues addressed here include: 1) whether these faults control the extrusion of coherent, rigid blocks of crust or whether they are simply passive features developed in a continuously deforming medium, 2) whether these faults are confined to the crust or penetrate through the lithosphere, and 3) how displacement is accommodated at the terminations of such large structures. Results from this study will also have important implications for the utility of "mass budget" approaches to balancing Indo-Eurasian convergence velocities. In addition to broadening the PI's experience with paleoseismic techniques, this study is unique in that it focuses on the spatial variability of displace near the termination of one of these structures.

0000503Kirby该项目将调查中国四川西部和甘肃省昆仑断裂东端周围的活动位移场。 该研究旨在进一步了解大型（1000公里）走滑断层在亚洲活跃的陆内变形中所起的作用。 这里讨论的未解决问题包括：1）这些断层是否控制连贯的刚性地壳块的挤压，或者它们是否只是在连续变形介质中发展的被动特征，2）这些断层是否仅限于地壳或穿透岩石圈，以及3）如何在如此大的结构的末端适应位移。 这项研究的结果还将对平衡印度-欧亚趋同速度的“大众预算”方法的效用产生重要影响。 除了扩大 PI 在古地震技术方面的经验外，这项研究的独特之处还在于它重点关注这些结构之一末端附近位移的空间变化。