| 四川大凉山断裂带古地震研究初步结果 |
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| 引用本文： | 宋方敏,李如成,徐锡伟.四川大凉山断裂带古地震研究初步结果[J].地震地质,2002,24(1):27-34. |
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| 作者姓名： | 宋方敏 李如成 徐锡伟 |
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| 作者单位： | 中国地震局地质研究所,北京,100029 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19980 4 0 70 1)资助，中国地震局地质研究所论著 2 0 0 2B0 0 0 9 |
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| 摘 要： | 沿四川大凉山断裂带的 4条次级断裂开挖了 4个探槽 ,共揭露出 9次古地震事件。根据探槽中年龄样品的测试结果 ,分析了各次事件的距今年龄及其重复间隔。其中 ,有 3个探槽共揭露出4次全新世以来的古地震事件。 9次古地震的垂直位移量在 0 5～ 1 5m之间 ,与鲜水河 -小江断裂带历史地震所产生的垂直位移量进行对比 ,估计它们的震级都在 7级以上
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| 关 键 词： | 古地震 深槽 大凉山 |
| 文章编号： | 0253-4967(2002)01-27-8 |
| 修稿时间： | 2001年3月23日 |
PRELIMINARY RESULTS OF THE INVESTIGATION OF PALEO-EARTHQUAKES ALONG THE DALIANGSHAN FAULT ZONE, SICHUAN PROVINCE, CHINA |
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| SONG Fang-min,LI Ru-cheng,XU Xi-wei.PRELIMINARY RESULTS OF THE INVESTIGATION OF PALEO-EARTHQUAKES ALONG THE DALIANGSHAN FAULT ZONE, SICHUAN PROVINCE, CHINA[J].Seismology and Geology,2002,24(1):27-34. |
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| Authors: | SONG Fang-min LI Ru-cheng XU Xi-wei |
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| Abstract: | Four prospecting trenches were excavated along 4 subsidiary faults of the Daliangshan fault zone, and 9 paleo-seismic events were revealed by these trenches. West of Doukanzi village, the Tc-1 trench is located on the northern segment of the Shimian-Haitang-Yuexi subsidiary fault. The occurrence time of 2 paleo-earthquakes revealed by this trench is 35ka and 3.5ka, respectively. In the north of Keqilada village, the Tc-2 trench is located on the middle-northern segment of the Puxiong-Zhuhe subsidiary fault |
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| Keywords: | Daliangshan Trenching Paleo-earthquake |
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