| Slip Rate of Yema River–Daxue Mountain Fault since the Late Pleistocene and Its Implications on the Deformation of the Northeastern Margin of the Tibetan Plateau |
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| 作者姓名： | LUO Hao HE Wengui YUAN Daoyang SHAO Yanxiu |
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| 作者单位： | 1 Key Laboratory of Active Tectonics and Volcano, Institute of Geology, China Earthquake Administration, Beijing 100029, China.2 Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China.3 Lanzhou National Geophysical Observatory, Lanzhou 730000, China |
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| 基金项目： | This work is granted by the Special Fund for China Earthquake Research (Grant No. 201408023), National Natural Science Foundation of China (Grant No. 40872132, 41030317) and Chinese Academy of Sciences Key Project (XDB03020201). |
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| 摘 要： | The slip rate of Yema River–Daxue Mountain fault in the western segment of Qilian Mountains was determined by the dated offset of river risers or gullies. Results indicate that the left-lateral fault slip rate is 2.82 ± 0.20 mm/a at Dazangdele site,2.00 ± 0.24 mm/a at Shibandun site,and 0.50 ± 0.36 and 2.80 ± 0.33 mm/a at two sites in Zhazihu. The ideal average slip rate of the whole fault is 2.81 ± 0.32 mm/a. The lower slip rate confirms part of the displacement of Altyn Tagh fault was transformed into an uplifting of the strap mountains in the western segment of Qilian Mountains,whereas another part transformed into sinistral displacement of Haiyuan fault. This study illustrates that the slip of large strike-slip faults in the northeastern margin of the plateau transforms into crust thickening at the tip of the fault without large-scale propagation to the outer parts of the plateau.
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| 关 键 词： | Slip rate strike-slip fault Yema River-Daxue Mountain fault Altyn Tagh fault Qilian ranges |
| 收稿时间： | 2013/11/9 0:00:00 |
| 修稿时间： | 9/9/2014 12:00:00 AM |
Slip Rate of Yema River-Daxue Mountain Fault since the Late Pleistocene and Its Implications on the Deformation of the Northeastern Margin of the Tibetan Plateau |
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| Authors: | LUO Hao HE Wengui YUAN Daoyang and SHAO Yanxiu |
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| Institution: | 1. Key Laboratory of Active Tectonics and Volcano, Institute of Geology, China Earthquake Administration, Beijing 100029, China;Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China
2. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China ;Lanzhou National Geophysical Observatory, Lanzhou 730000, China |
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| Abstract: | |
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| Keywords: | Slip rate strike-slip fault Yema River-Daxue Mountain fault Altyn Tagh fault Qilian ranges |
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