| 雪峰山早中生代构造演化:构造学和年代学分析木 |
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| 引用本文： | 褚杨,林伟,Michel Faure,王清晨.雪峰山早中生代构造演化:构造学和年代学分析木[J].地质科学,2011,46(1):146-160. |
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| 作者姓名： | 褚杨 林伟 Michel Faure 王清晨 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所岩石圈演化国家重点实验室 北京 100029； 2.Institue des Sciences de la Terre dOrléans,Campus Géosciences,Université dOrléans, 1A Rue de la Férollerie, 45071 Orléans Cedex 2,France； 3.中国科学院研究生院 北京 100049 |
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| 基金项目： | 国家重点基础研究发展计划"973"项目，中国科学院知识创新工程重大项目 |
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| 摘 要： | 雪峰山主体地处湖南省境内,位于华南板块的中心区域,是一条典型的陆内造山带.通过详细的野外地质观察,我们将其分为3个构造单元:西部外区,主要以大型箱状褶皱为主;中部区,与西部区以主逆冲断层相分隔,劈理发育呈扇状,是雪峰山构造带的核心区域,也是变质级别最深、变形最强的区域;东部区,变形集中在脆韧性区域之上,以极性北西构造为...
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| 关 键 词： | 华南板块 雪峰山 早中生代 多期构造变形 陆内造山 |
| 收稿时间： | 2010-10-06 |
| 修稿时间： | 2010-10-20 |
Tectonic evolution of the Early Mesozoic Xuefengshan belt: Insights from structural analysis and geochronological constraints |
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| Chu Yang,Lin Wei,Michel Faure,Wang Qingchen.Tectonic evolution of the Early Mesozoic Xuefengshan belt: Insights from structural analysis and geochronological constraints[J].Chinese Journal of Geology,2011,46(1):146-160. |
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| Authors: | Chu Yang Lin Wei Michel Faure Wang Qingchen |
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| Institution: | 1.State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;2.Institute des Sciences de la Terre d'Orleans,Campus Geosciences,Universite d'Orleans,1A Rue de la Ferollerie,45071 Orleans Cedex 2,France;3.Graduate University of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | In the center of the South China Block，in Hunan Province，the Xuefengshan Belt provides a well exposed example of intracontinental orogens.Detail field observations indicate that the Xuefengshan Belt can be divided into：(1)the Western Outer Zone，characterized by km scale box fold structure； (2)the Central Xuefengshan Zone，where the dip of the cleavage surface exhibits a fan like pattern，separated from the Western Outer Zone by the Xuefengshan Main Thrust，the most deformed and metamorphosed region in this belt； (3)and the Eastern Zone，deformed mainly in the brittle ductile level，characterized by top to the NW structures and also some back folding structures.The Xuefengshan Belt results of polyphase deformation：D1，characterized by a widespread top to the NW ductile shearing.D2 corresponds to a SE directed back thrusting and folding event.D3 consists of upright folds with vertical cleavage and lineation.The tectonic evolution of the Early Mesozoic Xuefengshan Belt is possibly originated by the continental subduction in response to the northwest directed subduction of the Pacific plate. |
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| Keywords: | South China Block Xuefengshan belt Early Mesozoic Polyphase deformation Intracontinental orogeny |
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