Chronology test and its significance of ancient earthquakes in the Pleistocene in southwestern margin of Qaidam Basin
Zhu Meng1, Li Dewei2, Li Shu1, Liu Demin2, Luo Wenxing3
1 Changjiang Institute of Survey Technical Research. MWR,Wuhan 430000,Hubei; 2 School of Earth Sciences, China University of Geosciences(Wuhan), Wuhan 430074,Hubei; 3 Three Gorges Geotechnical Consultants Co.,Ltd., Wuhan 430000,Hubei;
Abstract The southwestern margin of the Qaidam Basin was intensely affected by a series of faulting movement of the Neocene in the north of Kunlun Mountain,and developed serious soft sediment deformation structure such as load structures,flame structures,ball-and-pillow structures,seismic breccias,ground fissure,vibrational liquefaction deformation structure and synsedimentary micro-fault faults. The regional geological survey,the measured sections and sample tests all analysis that there were three strong uplift of mountains in 1.8-1.2 Ma,0.8Ma and 0.15Ma,these uplift events were accompanied by a strong ancient seismic activity. As the sedimentary and structural response in the uplift event,it formed a series of typical continental facies interplate seismites and the construction signs of seismites. It has a important significance to research the interplate uneven uplift of the Qinghai ̄Tibet Plateau and relationship among tectonic uplift,earthquake,deposition effects.
About author: About the first author Zhu Meng,born in 1986,master,engineer,is mainly engaged in the research of neotectonics and engineering geology. E-mail: zhumengdizhi@163.com.
Cite this article:
Zhu Meng,Li Dewei,Li Shu et al. Chronology test and its significance of ancient earthquakes in the Pleistocene in southwestern margin of Qaidam Basin[J]. JOPC, 2017, 19(1): 129-138.
Zhu Meng,Li Dewei,Li Shu et al. Chronology test and its significance of ancient earthquakes in the Pleistocene in southwestern margin of Qaidam Basin[J]. JOPC, 2017, 19(1): 129-138.
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