| 摘要: |
| 孝丰—三门湾断裂是浙江地区一条规模较大的NW向断裂,该断裂与萧山—球川断裂交汇处曾发生929年杭州5 1/4级地震,与余姚—丽水断裂交汇处曾发生1998年嵊州—新昌4.5级地震。研究认为孝丰—三门湾断裂广德—杭州段大致以苏州—安吉断裂和湖州—临安断裂为界,分为广德—安吉段、安吉—黄湖段和黄湖—瓶窑段,活动性质为正断层,倾向NE。通过野外地质地貌调查和ESR年龄样品测年认为,该断裂最新活动时代为中更新世晚期。 |
| 关键词: 孝丰—三门湾断裂 广德—杭州段 分段性 正断层 中更新世晚期 |
| DOI： |
| 分类号:P315 |
| 基金项目:浙江省地震局科技创新团队浙江省深部构造环境研究项目资助 |
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| Quaternary Activity along the Guangde-Hangzhou Section of the Xiaofeng-Sanmenwan Fault |
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Chen Tao1, Song Fangmin2, Yu Gangqun1, Yang Fuping1
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1.Zhejiang Earthquake Agency, Hangzhou 310013, China;2.Institute of Geology, China Earthquake Administration, Beijing 100029, China
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| Abstract: |
| The Xiaofeng-sanmenwan fault is a large-scaled NW trending fault in Zhejiang Province,The M5 1/4 Hangzhou earthquake of 929CE and the M4.5 Shengzhou-Xinchang earthquake of 1998 occurred at the intersection of the Xiaoshan-Qiuchuan fault and the Yuyao-Lishui fault. In this paper,the Guangde-Hangzhou segment of Xiaofeng-Sanmenwan fault in the is divided into the Guangde-Anji segment,the Anji-Huanghu segment and the Huanghu-Pingyao segment by the Suzhou-Anji fault and the Huzhou-Lin'an fault,characterized by normal fault. Based on field geological survey and the ESR dating result,it is concluded that the latest active time of the fault is in late Middle Pleistocene. |
| Key words: Xiaofeng-Sanmenwan fault Guangde-Hangzhou section Segmentation Normal fault Late middle pleistocene |
