| 龙陵-瑞丽断裂(南支)北段晚第四纪活动性特征 |
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| 引用本文： | 黄学猛,杜义,舒赛兵,谢富仁.龙陵-瑞丽断裂(南支)北段晚第四纪活动性特征[J].地震地质,2010,32(2):222. |
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| 作者姓名： | 黄学猛 杜义 舒赛兵 谢富仁 |
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| 作者单位： | 中国地震局地壳应力研究所,北京,100085 |
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| 基金项目： | 铁道部科技研究开发计划，国家科技支撑计划项目 |
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| 摘 要： | 遥感影像解译和野外地质地貌调查表明,龙陵-瑞丽断裂(南支)北段是以左旋走滑为主兼张性正断的区域性活动断裂。根据一些断错地貌点的大比例尺填图、实地测量及其年代学分析,确定了该断裂为全新世活动断裂,断裂晚更新世以来的平均水平滑动速率为2.2mm/a,平均垂直滑动速率为0.6mm/a;全新世以来的平均水平滑动速率为1.8～3.0mm/a,平均垂直滑动速率为0.5mm/a。断裂晚更新世以来的滑动速率在不同的时间尺度上变化不大,反映了该断裂晚更新世以来的活动强度比较平稳
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| 关 键 词： | 龙陵-瑞丽断裂 晚第四纪 断错地貌 滑动速率 |
STUDY OF THE LATE QUATERNARY SLIP RATE ALONG THE NORTHERN SEGMENT ON THE SOUTH BRANCH OF LONGLING-RUILI FAULT |
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| HUANG Xue-meng,DU Yi,SHU Sai-bing,XIE Fu-ren.STUDY OF THE LATE QUATERNARY SLIP RATE ALONG THE NORTHERN SEGMENT ON THE SOUTH BRANCH OF LONGLING-RUILI FAULT[J].Seismology and Geology,2010,32(2):222. |
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| Authors: | HUANG Xue-meng DU Yi SHU Sai-bing XIE Fu-ren |
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| Affiliation: | HUANG Xue-meng DU Yi SHU Sai-bing XIE Fu-ren(Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085,China) |
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| Abstract: | The Longling-Ruili Fault is an important northeast trending active fault in southwestern China which controls the development of the sedimentary series and magmatic action of the two sides of the fault,and also controls Longling Basin,Mangshi Basin and Zhefang Basin along the fault.Due to limited Quaternary sediments samples and harsh natural conditions,the study of late Quaternary fault activity on the northern segment of the Longling-Ruili Fault is lacking and presently the time of the newest faulting and the Quaternary slip rate are not clear.Based on interpretation of remote sensing images,quantitative geomorphologic deformation measurement and dating of young terrace deposits and alluvial fans,the paper obtains some new results as follows:The northern segment of Longling-Ruili Fault is a Holocene dextral strike-slip fault with a normal slip component.The terrace T1 composed mainly of alluvial deposits formed during 4ka BP was offset by the northern segment of the Longling-Ruili Fa |
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| Keywords: | the Longling-Ruili Fault late Quaternary faulted landforms slip rate |
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