| 华南板块早中生代陆内造山过程——以雪峰山-九岭为例 |
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| 引用本文： | 褚杨,林伟,FAURE Michel,王清晨.华南板块早中生代陆内造山过程——以雪峰山-九岭为例[J].岩石学报,2015,31(8):2145-2155. |
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| 作者姓名： | 褚杨 林伟 FAURE Michel 王清晨 |
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| 作者单位： | 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,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,法国奥尔良大学地球科学研究所, 奥尔良 45067,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 |
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| 基金项目： | 本文受国家自然科学基金青年项目(41302161)和中国博士后科学基金项目(2013M530721、2014T70119)联合资助. |
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| 摘 要： | 雪峰山-九岭造山带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,雪峰山在早中生代经历了3期构造变形:D1为上部指向NW的韧性剪切,D2代表了一期反向褶皱-逆冲构造事件,以及D3期的水平挤压形成的直立的褶皱、劈理和线理。而在九岭,早中生代大规模脆-韧性域构造变形叠加在早古生代韧性变形之上,形成了一系列极性NW逆冲断层和不对称褶皱。雪峰山-九岭陆内造山带形成于早中生代,造山作用可以分为两个阶段,即245~225Ma的挤压变形阶段和225~215Ma的垮塌-岩浆侵位阶段。雪峰山-九岭造山带的构造特点表明,华南板块东南缘古太平洋板块向北西方向的俯冲可能引发了早中生代的陆内造山过程。
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| 关 键 词： | 雪峰山 九岭 早中生代 陆内造山 |
| 收稿时间： | 2014/11/19 0:00:00 |
| 修稿时间： | 2014/12/28 0:00:00 |
Early Mesozoic intracontinental orogeny: Example of the Xuefengshan-Jiuling Belt |
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| CHU Yang,LIN Wei,FAURE Michel and WANG QingChen.Early Mesozoic intracontinental orogeny: Example of the Xuefengshan-Jiuling Belt[J].Acta Petrologica Sinica,2015,31(8):2145-2155. |
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| Authors: | CHU Yang LIN Wei FAURE Michel and WANG QingChen |
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| Institution: | State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,Institut des Sciences de la Terre d'Orléans, Université d'Orléans, 1a rue de la Férollerie, 45067 Orléans Cedex 2, France and State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | The Xuefengshan-Jiuling Belt, located in the center of the South China Block, is a typical intracontinental orogen. According to our detailed field investigation, the Xuefengshan Belt has experienced three phases of deformation: D1 is characterized by top-to-the NW shearing, D2 is represented by back-folding and thrusting, and D3 formed upright folds, cleavage and vertical lineation. In the Jiuling Belt, the Early Paleozoic ductile deformation is overprinted by Early Mesozoic large-scale brittle-ductile deformation, including top-to-the NW thrust and asymmetrical folds. The Xuefengshan-Jiuling orogeny, occurred in the Early Mesozoic, can be separated into two episodes that are (1) compression at 245~225Ma and (2) collapse and magmatism at 225~215Ma. The tectonic evolution of the Xuefengshan-Jiuling Belt indicates that NW-directed subduction of the Paleo-Pacific plate beneath the South China Block may trigger the Early Mesozoic intracontinental orogeny. |
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| Keywords: | Xuefengshan Jiuling Early Mesozoic Intracontinental orogen |
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