STUDY ON TECTONIC DEFORMATION AND QUATENARY ACTIVITY OF MIDDLE SEGMENT OF BAIHE-GUCHENG FAULT BELT
Lei Dongning 1,2) ;Cai Yongjian 1,2,3) ;Qiao Yueqiang 1,2) ;Yu Song 1,2) ; Wu Jianchao 1,2) ; and Miao Weidong 1,2)
1) Hubei Key Laboratory of Earthquake Early Warning, Institute of Seismology, CEA, Wuhan 430071 ;2) Institute of Earthquake Engineering of Wuhan 430071;3) Faculty of Earth Science, China University of Geosciences, Wuhan 430074
Abstract：Through field survey, with geological and geomorpohologic methods and dating the fault gouge and Quaternary sediments, we made certain study on tectonic deformation and activity of the middle segment of BaiheGucheng fault. Some conclusions can be drawn that the fault belt suffered from multistage tectonic deformation and it is clearly zoning. The lifting velocity of fault and its neighbouring area ranges from 0.64
mma -1 to 0.85 mma-1 since the Middle stage of Late Pleistocene. The fault was predominantly active in the Early Quaternary with sinistral slip component. The seismicity of fault and nearby tends to enhance in time domain and is tectonically relatated to the fault in spatial domain.
Lei Dongning,Cai Yongjian,Qiao Yueqiang et al. STUDY ON TECTONIC DEFORMATION AND QUATENARY ACTIVITY OF MIDDLE SEGMENT OF BAIHE-GUCHENG FAULT BELT[J]. jgg, 2012, 32(5): 41-47.
