Present-day Block Movement and Fault Activity on the Eastern Margin of the Tibetan Plateau

查看全文 作　　者：TANG [1]Wenqing;ZHANG [2]Yongshuang;ZHANG [1]Qingzhi;ZHOU [1]Hongfu;PAN [1]Zhongxi;LI [1]Jun;YANG [1]Cheng

机构地区：[1]Chengdu Center, China gelogical survey;[2]Institute of Geomechanics, Chinese Academy of Geological Sciences

出　　处：《Acta Geologica Sinica(English Edition)》索引2016年第90卷第2期,共11页

基　　金：supported by a geological survey project of the China Geological Survey(No.1212011140013,No.12120113009800,No.121201010000150001) 摘　　要：The geology and tectonics in the eastern margin of Tibetan Plateau are complex. The main tectonic framework is composed of blocks and faults. Using discontinuous global positioning system survey data for 2008–2014, the velocity field for the Eurasia reference framework was obtained. Based on the velocity field, the present-day velocities of the blocks and boundary faults were estimated. The results reveal that the movement rates of the Chuan-Qing, South China, Chuan-Dian and Indo-China blocks are(17.02±0.60) mm/a,(8.77±1.51) mm/a,(13.85±1.31) mm/a and(6.84 ± 0.74) mm/a, respectively, and their movement directions are 99.5°, 120.3°, 142.9° and 153.3°, respectively. All blocks exhibit clockwise rotation. The displacement rates of the Xianshuihe, Longmenshan, Anninghe, Zemuhe, Xiaojiang and Red River faults are(7.30±1.25–8.30±1.26) mm/a,(10.07±0.97–11.79±0.89) mm/a,(0.96±0.74–2.98±1.73) mm/a,(2.03±0.49–3.20±0.73) mm/a,(3.45±0.40–6.02±0.50) mm/a and(6.23±0.56) mm/a, respectively. The Xianshuihe, Anninghe, Zemuhe and Xiaojiang faults show leftlateral strike-slip movement, while the Longmenshan and Red River faults show right-lateral strikeslip. These characteristics of the blocks and faults are related to the particular tectonic location and dynamic mechanism. 关键词：青藏高原东缘块体运动断裂活动全球定位系统边界断层红河断裂走滑运动小江断裂

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Present-day Block Movement and Fault Activity on the Eastern Margin of the Tibetan Plateau

参考文献(63)

引证文献(3)

耦合文献(1748)

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