| 口泉断裂中段晚第四纪最新活动研究 |
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| 引用本文： | 徐伟,刘旭东,张世民.口泉断裂中段晚第四纪最新活动研究[J].中国地震研究,2012,26(4):479-490. |
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| 作者姓名： | 徐伟 刘旭东 张世民 |
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| 作者单位： | 中国地震局地壳应力研究所，北京市德外西三旗安宁庄路1号 100085;中国地震局地壳应力研究所，北京市德外西三旗安宁庄路1号 100085;中国地震局地壳应力研究所，北京市德外西三旗安宁庄路1号 100085 |
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| 基金项目： | This research was jointly funded by the Nation Natural Science Foundation (Grant No. 40972143) and the Key Research Project of the 11th “Five-year Plan” of China Earthquake Administration (1520945024). |
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| 摘 要： | Systematic research of the characteristics of late Quaternary activity of the middle part of Kouquan fault has been done through conducting 1∶50000 geologic mapping combining with remote sensing interpretation of spot imaging, field validating and chronology research of the research area. Studies suggest that the middle part of Kouquan fault has had strong activity since the late Quaternary which controls the tectonic evolvement of the nearby mountains and Datong basin. The recent activity of this fault has faulted the sandy gravel layers of T1 terrace and the lower part of dark loessial soils over the terrace on the north of Chanfang village. The maximum vertical displacement is over 3m in the area between Xiaoyukou village and Louzikou village, and to the south of Dayukou village and the north of Emaokou village, the displacement decreases to 0.5m and 0.25m respectively. Based on the recent faulted landforms and combined with dating, we determined the age of recent activity of the fault in the research area to be between 7.71ka B.P. to 3.00 ka B.P. Discussions are made on this in combination with previous research.
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| 关 键 词： | Kouquan fault Faulted landform Radiocarbon dating Recent activity of fault |
| 修稿时间： | 3/6/2011 12:00:00 AM |
Research of the Late Quaternary Recent Activity of the Middle Segment of Kouquan Fault |
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| Xu Wei,Liu Xudong and Zhang Shimin.Research of the Late Quaternary Recent Activity of the Middle Segment of Kouquan Fault[J].Earthquake Research in China,2012,26(4):479-490. |
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| Authors: | Xu Wei Liu Xudong and Zhang Shimin |
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| Affiliation: | Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China |
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| Abstract: | Systematic research of the characteristics of late Quaternary activity of the middle part of Kouquan fault has been done through conducting 1:50000 geologic mapping combining with remote sensing interpretation of spot imaging, field validating and chronology research of the research area. Studies suggest that the middle part of Kouquan fault has had strong activity since the late Quaternary which controls the tectonic evolvement of the nearby mountains and Datong basin. The recent activity of this fault has faulted the sandy gravel layers of T1 terrace and the lower part of dark loessial soils over the terrace on the north of Chanfang village. The maximum vertical displacement is over 3m in the area between Xiaoyukou village and Louzikou village, and to the south of Dayukou village and the north of Emaokou village, the displacement decreases to 0.5m and 0.25m respectively. Based on the recent faulted landforms and combined with dating, we determined the age of recent activity of the fault in the research area to be between 7.71ka B.P. to 3.00 ka B.P. Discussions are made on this in combination with previous research. |
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| Keywords: | Kouquan fault Faulted landform Radiocarbon dating Recent activity of fault |
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