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| 阜康古牧地活动断裂变形特征研究 | |
| 引用本文： | 史杰,沈军,吴传勇,张慧,谭明,陈建波.阜康古牧地活动断裂变形特征研究[J].新疆地质,2012,30(2):172-175. |
| 作者姓名： | 史杰 沈军 吴传勇 张慧 谭明 陈建波 |
| 作者单位： | 1. 新疆维吾尔自治区地质矿产勘查开发局第二水文地质大队,新疆 昌吉,831100 2. 新疆维吾尔自治区地震局,新疆 乌鲁木齐,830011 3. 中国地震局兰州地震研究所,甘肃 兰州,730000 |
| 基金项目： | 中国地震局天山北麓活动构造及地震危险性评价技术(20080813);新疆地震科学基金(200903)共同资助 |
| 摘 要： | 对大红沟沟口处河流Ⅰ级和Ⅱ级阶地断裂变形特征研究表明,古牧地断裂活动为古近系泥岩逆冲于第四系之上。断裂破碎带形变主要被两种形式吸收:一是晚第四纪地层拱曲变形作用,二是断裂断错作用。该时期断裂带平均垂直变形速率约为0.26～0.30 mm/a,断裂带内断面发育,既有低角度逆冲断层,也有高角度正断层,组成宽度超过65 m的形变带,破裂带内泥岩揉皱变形明显,最大一次逆冲断错距离为0.4 m,计算震级为M 6.5～6.8。 |
| 关 键 词： | 阜康 古牧地 活动断裂 变性特征 |
Deformation Characteristics Research at Dahonggou Gully on Fukang Fault,Xinjiang |
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| SHI Jie , SHEN Jun , WU Chuan-yong , ZHANG Hui , TAN Ming , CHEN Jian-bo.Deformation Characteristics Research at Dahonggou Gully on Fukang Fault,Xinjiang[J].Xinjiang Geology,2012,30(2):172-175. | |
| Authors: | SHI Jie SHEN Jun WU Chuan-yong ZHANG Hui TAN Ming CHEN Jian-bo |
| Institution: | 1.Xinjiang Bureau of Geology and Mineral Resources Exploration and Development,No.2 hydrogeolological Team,Changji,Xinjiang,831100,China;2.Earthquake Administration of Xinjiang Autonomous Region,Urumqi,Xinjiang, 830011,China;3.Lanzhou Institute of Seismology,China Earthquake Adiministration,Lanzhou,Gansu,730000,China) |
| Abstract: | The study on the fracture deformation characteristics exposed by large trenches on Ⅰ and Ⅱ terrace near the Dahonggou gully shows that the fault activity is the Paleogene mudstone thrusting on Quaternary strata.The deformation on the fault zone is mainly absorbed by two forms:One is the late Quaternary strata’s hogging deformation;the other is dislocation fractures.The vertical deformation rate on the fault zone is about 0.26～0.30mm/a since the late Quaternary.Fractures in the fault zone whose width is 65 meters are developed strongly,and are composed by low-angle thrust faults and high-angle normal faults.The deformation in the mudstone is significant in the fault zone,and the largest displace is 0.4 meters which calculates that the earthquake is M6.5～6.8. |
| Keywords: | Fukang Gumudi fault Deformation characteristics |
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