摘要
湖州—临安断裂是浙江地区一条规模较大的北东向断裂,沿该断裂发生过2017年临安4.2级地震。湖州—临安断裂龙溪—黄湖段遥感影像线性特征明显,对地貌有明显的控制作用,断裂西侧为高山,东侧为丘陵平原过渡带。通过跨断层地质剖面及断层露头剖面分析,认为湖州—临安断裂龙溪—黄湖段活动性质为正断。通过野外调查,并结合卫星影像、ESR年龄样品测定,判定该断裂的为第四纪早中更新世有过活动的断裂。
The Huzhou-Lin’an Fault is a large-scale NE-trending fault in Zhejiang region,witnessing the 2017 Lin’an M4.2 earthquake.The remote sensing image of the Longxi-Huanghu section of the Huzhou-Lin’an fault has obvious linear characteristics and has a significant control effect on the landform,with high mountains on the west side and a hilly plain transition zone on the east side.Through the analysis of the cross-fault geological profile and fault outcrop profile,it is concluded that the activity nature of the Longxi-Huanghu section of the Huzhou-Lin’an Fault is mainly a normal fault.Through field investigation,combined with satellite images and ESR age samples determination,it is determined that the fault is an active one in the early and middle Pleistocene of the Quaternary.
作者
陈涛
宋方敏
孙海青
杨福平
余刚群
CHEN Tao;SONG Fangmin;SUN Haiqing;YANG Fuping;YU Gangqun(Zhejiang Earthquake Agency,Hangzhou 310031,China;Institute of Geology,China Earthquake Adminis-tration,Beijing 100029,China)
出处
《华南地震》
2025年第2期16-23,共8页
South China Journal of Seismology
基金
浙江省地震局青蓝工程项目(2023)。
