| 新疆阿尔泰西北部两期南北向构造的成因及地质意义 |
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| 引用本文： | 徐胜兰,陈洪德,林丽,谢云喜. 新疆阿尔泰西北部两期南北向构造的成因及地质意义[J]. 成都理工大学学报(自然科学版), 2009, 36(3) |
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| 作者姓名： | 徐胜兰 陈洪德 林丽 谢云喜 |
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| 作者单位： | 1. 成都理工大学沉积地质研究院,成都,610059
2. 四川地矿局区域地质调查队,成都,610213 |
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| 基金项目： | 新疆维吾尔自治区专项资金资助项目，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 新疆阿尔泰西北部地区的南段,主构造线方向为北西-南东向,而其北段的主构造线方向突变为近南-北向(区域性南北向构造).研究表明,在北西-南东向区域构造线发育地区,在一些已知的矿区内也存在南-北走向的断裂系统(矿区南-北向构造).通过地质填图综合调查和应变分析研究,区域性的南-北向构造仅发育于前奥陶系分布区,特斯巴汗断裂北东,是海西运动前的产物.在额尔齐斯山前地带新发现两套石英质砾岩,是阿尔泰推覆构造的沉积响应.结合对冲乎尔盆地进行的构造分析,表明推覆构造是由南向北、由南东向北西扩展的.矿区的南-北向构造系统是在先存的北西-南东向构造基础上,随着推覆构造应力扩展新产生的分支断裂,同时局部形成张性空间,成为容矿构造.而区域性的南-北向构造实质是海西运动前构造形迹的残留.
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| 关 键 词： | 新疆 阿尔泰 南北向构造 推覆构造 成因 |
Genesis and geological significance of two-epoch south-north tectonic in the northwest of Altay,Xinjiang,China |
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| XU Sheng-lan,CHEN Hong-de,LIN Li,XIE Yun-xi. Genesis and geological significance of two-epoch south-north tectonic in the northwest of Altay,Xinjiang,China[J]. Journal of Chengdu University of Technology: Sci & Technol Ed, 2009, 36(3) |
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| Authors: | XU Sheng-lan CHEN Hong-de LIN Li XIE Yun-xi |
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| Affiliation: | XU Sheng-lan1,CHEN Hong-de1,LIN Li1,XIE Yun-xi21.Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China,2.Regional Geological Survey Party,Sichuan Bureau of Geology , Mineral,Chengdu 610213 |
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| Abstract: | In the south section of the northwest of Altay,Xinjiang,the main structure directs NW-SE and suddenly transfers to S-N in the north(the primary S-N trench tectonics).The research indicates that in the area where the NW-SE regional structure line develops,a S-N trench system exists in the known ore areas(the secondary S-N trench tectonics).According to geologic mapping and strain analysis,the regional S-N tectonics only developed in Pre-Ordovician areas,and the northeast of Tesibahan Faults formed before Her... |
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| Keywords: | Xinjiang Altay N-S trench tectonic nappe structure genesis |
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