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| 郯庐断裂带江苏段东地堑边界断层第四纪活动性 |
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曹筠1,2, 冉勇康2, 许汉刚3, 李彦宝2, 马兴全2, 张鹏3, 李丽梅3
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1.河北省地震局, 石家庄市槐中路262号 050021;2.中国地震局地质研究所(活动构造与火山重点实验室), 北京市朝阳区华严里甲1号 100029;3.江苏省地震局, 南京 210014
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| 摘要: |
| 郯庐断裂带东地堑边界断层在断裂带演化过程和现今构造格局中都是重要断层，对该边界断层的第四纪活动性研究有助于了解郯庐断裂带的演化历史和地震活动性，而有关该边界断层第四纪活动性研究较少且至今尚无定论。本文通过浅层地震勘探和钻孔联合剖面相结合的方法，针对郯庐断裂带江苏段东地堑两边界断层开展系统的断层第四纪活动性研究，结果显示，昌邑-大店断裂（F1）第四纪以来未见构造运动证据，白芬子-浮来山断裂（F2）在第四纪早期曾发生有关活动，晚更新世以来未见活动迹象。 |
| 关键词: 郯庐断裂带 江苏段 边界断层 断层第四纪活动性 |
| DOI： |
| 分类号:P315 |
| 基金项目:河北省地震局地震科技星火计划项目（DZ20180317008）资助 |
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| Quaternary Activity of the Boundary Fault of Eastern Graben in the Jiangsu Segment, the Tan-Lu Fault Zone |
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Cao Jun1,2, Ran Yongkang2, Xu Hangang3, Li Yanbao2, Ma Xingquan2, Zhang Peng3, Li Limei3
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1.Hebei Earthquake Agency, Shijiazhuang 050021, China;2.Key Laboratory of Active Fault and Volcano, Institute of Geology, CEA, Beijing 100029, China;3.Jiangsu Earthquake Agency, Nanjing 210014, China
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| Abstract: |
| The boundary fault of eastern graben,the Tan-Lu Fault Zone,is the main boundary fault which plays an important role in the evolution of the fault zone and present structural framework. The research on the Quaternary activity of the boundary fault of the eastern graben is helpful to understand evolutionary history and seismicity of the Tan-Lu Fault Zone. However,the study on the two boundary fault is rare and inclusive. Based on shallow seismic exploration and composite drilling section,this paper systematically researches the Quaternary activity of the boundary fault of the eastern graben in the Jiangsu segment,the Tan-Lu Fault Zone. The result reveals that there is no evidence of tectonic movement since the Quaternary period along the Changyi-Dadian Fault(F1). Nevertheless,Baifenzi-Fulaishan Fault(F2)exists in the tectonic movement during the early Quaternary period. |
| Key words: The Tan-Lu Fault Zone Jiangsu segment Boundary fault Quaternary activity of fault |
