Preliminary study on active features of Fenghuangshan-Tianshui fault, West Qinling north boundary fault zone since the late of Late Pleistocene |
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Authors: | Han Zhu-jun Xiang Hong-fa and Guo Shun-min |
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Institution: | (1) Institute of Geology, China Seismological Bureau, 100029 Beijing, China |
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Abstract: | 2 Conclusion Fenghuangshan-Tianshui fault is a Holocene active fault. It laterally slips at the average rate of 1.1 mm/a during 6.4 ka
and vertically slips at the average rate of 0.37 mm/a and 0.16 mm/a since the time 16.6 ka and 6.4 ka before respectively.
Diaogoumeng-Dongjiawan segment has occurred an abrupt event in the period of 6.4 ka BP, which is assumed to be related to
the 734 Tianshui M=7 earthquake, but further work is still necessary.
Foundation item: Chinese Joint Seismological Science Foundation (198023). |
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Keywords: | active fault slip rate surface rupture zone |
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