| 青藏高原东缘岷江断裂构造特征、变形序列和演化历史 |
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| 引用本文： | 司建涛,刘顺.青藏高原东缘岷江断裂构造特征、变形序列和演化历史[J].四川地质学报,2008,28(1):1-5. |
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| 作者姓名： | 司建涛 刘顺 |
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| 作者单位： | 成都理工大学地球科学学院,成都,610059 |
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| 摘 要： | 岷江断裂是青藏高原东缘的重要边界断裂，呈南北向延伸。地球物理场背景及地质演化历史的研究表明，岷江断裂是一条具有长期发展历史的大断裂。岷江断裂的活动具有多期次性：晚古生代时已经存在，为张性断裂；中生代受北东一南西方向挤压，产生右旋走滑运动；新生代以来，区域应力转变为北西一南东向挤压，随着青藏高原东缘物质向南东方向逃逸，岷江断裂在逆冲的同时伴随着左旋走滑，现在的GPS测量结果显示，岷江断裂仍在进行左旋运动。
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| 关 键 词： | 岷江断裂 地质演化 期次 GPS |
| 文章编号： | 1006-0995（2008）01-0001-05 |
| 收稿时间： | 2007-08-21 |
| 修稿时间： | 2007年8月21日 |
Geological Features, Deformation Sequence and Evolution of the Minjiang Fault on the Eastern Margin of the Qinghai-Tibet Plateau |
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| SI Jian-Tao,LIU Shun.Geological Features, Deformation Sequence and Evolution of the Minjiang Fault on the Eastern Margin of the Qinghai-Tibet Plateau[J].Acta Geologica Sichuan,2008,28(1):1-5. |
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| Authors: | SI Jian-Tao LIU Shun |
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| Institution: | SI Jian-Tao LIU Shun (College of Earth Science, Chengdu University of Technology, Chengdu 610059) |
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| Abstract: | The longitudinal Minjiang fault is one of the most important faults on the eastern margin of the Qinghai-Tibet Plateau. Study of the geophysical fields and the geological evolution shows that the Minjiang fault is a long-lived fault. In the Late Paleozoic, it began to act as an extension fault, and in the Mesozoic it became a right-lateral strike-slip fault under the NE-trending stress. In the Cenozoic, it is a thrust left-lateral with strike-slip resulting from NW-trending compressive stress. The GPS shows that it is a still left-lateral strike-slip. |
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| Keywords: | Minjiang fault geological evolution strike-slip GPS |
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