| 龙门山断裂带南段错断晚更新世以来地层的证据 |
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| 引用本文： | 杨晓平,蒋溥,宋方敏,梁小华,陈献程,邓忠文. 龙门山断裂带南段错断晚更新世以来地层的证据[J]. 地震地质, 1999, 21(4): 341-345 |
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| 作者姓名： | 杨晓平 蒋溥 宋方敏 梁小华 陈献程 邓忠文 |
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| 作者单位： | 1. 中国地震局地质研究所,北京,100029
2. 四川省水利电力勘测设计院,成都,610000 |
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| 基金项目： | 中国地震局地质研究所项目;99B052; |
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| 摘 要： | 在野外实地考察基础上,研究人工开挖剖面并使用现代测年技术后,发现龙门山断裂带南段的前山断裂和中央断裂自晚更新世以来发生过强烈的活动。可以分辩出龙门山前山断裂南段大川- 双石断裂错断距今5-74 万a 以来的冲积层,垂直位移1-74m ;中央断裂南段五龙断裂在错断距今9 万a 左右的冲洪积地层后,被距今约7-85 万a 的坡积层覆盖,剖面上地层的垂直位移为0-73m
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| 关 键 词： | 龙门山 逆断层 五龙断裂 大川双石断裂 |
| 修稿时间： | 1988-08-01 |
THE EVIDENCE OF THE SOUTH LONGMENSHAN FAULT ZONES CUTTING LATE QUATERNARY STRATUM |
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| Yang Xiaoping,JIANG Pu,Song Fengmin,Liang Xiaohua,CHEN Xiancheng,Deng Zhongwen. THE EVIDENCE OF THE SOUTH LONGMENSHAN FAULT ZONES CUTTING LATE QUATERNARY STRATUM[J]. Seismology and Geology, 1999, 21(4): 341-345 |
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| Authors: | Yang Xiaoping JIANG Pu Song Fengmin Liang Xiaohua CHEN Xiancheng Deng Zhongwen |
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| Abstract: | The Longmenshan fault zone is a boundary fault between the Tibet Plateau and western Sichuan foreland basin which controls the seismicity of the Longmenshan region. Two geological profiles had been dug in the south segment of Longmenshan fault zones. It is found that the reverse Wulong fault (south segment of the Longmenshan center fault zone), at the northern of Wulong village, offsets the stratum of TL age 92.0±7.2 thousand years, and is covered with the layer which TL age is 78.5±6.1 thousand yea |
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| Keywords: | Longmenshan Mountain Thrust fault Wulong fault Dachuan Shuangshi Fault |
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