两郧断裂郧县盆地段地质与地球物理特征研究  

Study on Geological and Geophysical Features of Yunxian Basin Segment of Liangyun Fault Belt

作　　者：林松[1,2] 李媛 王薇[1,2] 廖武林[1] 乔岳强 LIN Song;LI Yuan;WANG Wei;LIAO Wulin;QIAO Yueqiang(Hubei Key Laboratory of Earthquake Early Warning,Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China;Wuhan Institute of Earthquake Engineering Co Ltd,40 Hongshance Road,Wuhan 430071,China)

机构地区：[1]中国地震局地震研究所地震预警湖北省重点实验室,武汉市洪山侧路40号430071 [2]武汉地震工程研究院有限公司,武汉市洪山侧路40号430071

出　　处：《大地测量与地球动力学》2019年第2期148-152,共5页Journal of Geodesy and Geodynamics

基　　金：中国地震局社会公益研究项目(1521401800062)~~

摘　　要：通过野外地质调查,结合地球物理探测手段,研究两郧断裂郧县盆地段地质与地球物理特征;参照两郧断裂带多个位置采集断层物质的SEM、TL测试成果,并结合本次对断层上断点沉积物OSL测年数据,对两郧断裂该段第四纪活动性进行分析。研究结果表明,两郧断裂在郧县盆地段埋深相对较深;断裂特征主要为逆断层,部分分支断裂显示为正断性质;断裂带最新活动时代为中更新世晚期-晚更新世早期。The geological and geophysical characteristics of the Yunxian basin segment of Yunyang-Yunxi faults are studied through geological survey and geophysical exploration.According to multiple position acquisition of Yunyang-Yunxi faults,material fracture SEM,TL test results,and combined with the data of the upper fault point sediment OSL,the Quaternary activity of the segment is analyzed.The results show that the Yunyang-Yunxi faults in the Yunxian basin section are relatively deep,the fracture characteristics are mainly reverse faults,and some branch faults show positive fault characteristics.The latest active age of the fault zone is the late Middle Pleistocene to the early Late Pleistocene.

关 键 词：两郧断裂 地球物理特征 地震反射 断层活动性 

分 类 号：P313[天文地球—固体地球物理学]