| 龙门山山前大邑断裂活动时代与最新构造变形样式初步研究 |
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| 引用本文： | 董绍鹏,韩竹军,尹金辉,李峰,安艳芬.龙门山山前大邑断裂活动时代与最新构造变形样式初步研究[J].地震地质,2008,30(4):996-1003. |
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| 作者姓名： | 董绍鹏 韩竹军 尹金辉 李峰 安艳芬 |
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| 作者单位： | 1. 中国地震局地质研究所,国家地震活动断层研究中心,北京,100029
2. 中国地震灾害防御中心,北京,100029 |
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| 基金项目： | 中国地震局汶川8.0级地震应急科学考察项目资助 |
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| 摘 要： | 通过野外地质填图、3D扫描仪以及全站仪测量等技术手段,取得了大邑断裂活动时代与最新构造变形样式的初步证据。大邑断裂所在地区白垩纪和新近纪地层的褶曲变形时代应在新近纪末—早更新世,而断裂的最新活动时代是全新世,其最新构造变形样式主要表现为全新世地层的褶皱,在地貌上表现为多个山前鼓丘。这些鼓丘单个平面形态呈椭圆形,沿山前呈雁列状分布,延伸长度为2.5km。根据鼓包的剖面形态,推测大邑断裂为一条全新世活动的盲断裂
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| 关 键 词： | 大邑断裂 构造变形样式 活动时代 隐伏断层 |
| 收稿时间： | 2008-12-18 |
A PRELIMINARY RESEARCH ON THE LATEST TECTONIC DEFORMATION STYLE AND THE ACTIVITY AGE OF THE DAYI FAULT IN THE PIEDMONT OF THE LONGMEN MOUNTAINS |
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| DONG Shao-peng,HAN Zhu-jun,YIN Jin-hui,LI Feng,AN Yan-fen.A PRELIMINARY RESEARCH ON THE LATEST TECTONIC DEFORMATION STYLE AND THE ACTIVITY AGE OF THE DAYI FAULT IN THE PIEDMONT OF THE LONGMEN MOUNTAINS[J].Seismology and Geology,2008,30(4):996-1003. |
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| Authors: | DONG Shao-peng HAN Zhu-jun YIN Jin-hui LI Feng AN Yan-fen |
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| Abstract: | Primary evidence of the latest tectonic deformation style and the activity age of the Dayi Fault in the Sichuan Basin are obtained by field geological mapping,and surveying with the help of 3D scanner and total station.In the region of Wenshangou-Longfengchang,northeast of Dayi county on the northwestern wall of the fault,the time of Cretaceous and Neogene strata s gentle folding was measured to be between late Neogene and early Pleistocene.And obviously its forming time is later than the Longmen Shan Fault |
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| Keywords: | Dayi Fault tectonic deformation style activity age buried fault |
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