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| 龙门山中段山前带构造变形历史与物理模拟 | |
| 引用本文： | 杨长清,刘树根,于福生.龙门山中段山前带构造变形历史与物理模拟[J].矿物岩石,2011,31(2). |
| 作者姓名： | 杨长清 刘树根 于福生 |
| 作者单位： | 1. 国土资源部海洋油气资源与环境地质重点实验室,青岛海洋地质研究所,山东青岛 266071 2. 成都理工大学,四川成都,610059 3. 中国石油大学,北京,102249 |
| 基金项目： | 国家科技重大专项基金(2008ZX05002-004); 中国石油化工西南油气分公司博士后基金(GJ-82-0715) |
| 摘 要： | 龙门山冲断构造带具有NE分带、EW分段的构造变形特征。龙门山构造带中段逆冲推覆带是以出露彭灌杂岩及其前缘发育飞来峰为典型特征,变形以倾向北西的紧闭倒转-同斜褶皱为主;推覆-滑覆带变形强烈,发育一系列叠瓦状逆冲断层及相关的褶皱,及一系列由泥盆系至下三叠统碳酸盐岩构成的飞来峰,地腹发育厚皮构造,以叠瓦冲断构造为主;而前陆坳陷变形较弱,地表主要为SE倾伏的单斜,地腹则发育断层相关褶皱。通过构造物理模拟认为:1)龙门山中段构造变形受力边界主应力与断裂走向间的锐夹角为70°;2)变形样式总体为双滑脱层所控制的分层滑脱垂向叠加构造组合;3)构造变形过程具有3个阶段,早期须家河组沉积之后产生的滑脱断层垂向叠加,中期在遂宁组沉积期间和晚期在蓬莱镇组沉积期间及其后,发生滑脱断层垂向叠加,且控制沉积。 |
| 关 键 词： | 构造物理模拟 构造变形过程 变形样式 龙门山构造带 |
TECTONIC DEFORMATION HISTORY AND PHYSICAL MODELING IN THE MIDDLE PIEDMONT ZONE OF LONGMEN MOUNTAINS |
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| YANG Chang-qing,LIU Shu-gen,YU Fu-sheng.TECTONIC DEFORMATION HISTORY AND PHYSICAL MODELING IN THE MIDDLE PIEDMONT ZONE OF LONGMEN MOUNTAINS[J].Journal of Mineralogy and Petrology,2011,31(2). | |
| Authors: | YANG Chang-qing LIU Shu-gen YU Fu-sheng |
| Institution: | YANG Chang-qing1,LIU Shu-gen2,YU Fu-sheng3 1.Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources,Qingdao 266071,2.Chengdu University of Technology,Chengdu 610059,3.China University of Petroleum,Beijing 102249 |
| Abstract: | Longmenshan thrust structure belt can be divided into several belts in NE direction and into several sections in EW direction.The overthrust zone of middle section of Longmenshan structural belt is featured by occurrence of Pengxian-Guangxian Complex and development of klippe in its front edge,with well developed tight and isoclinal folds dipping towards northwest.The deformation of nappe-slumped overthrusts are very strong,developing a series of imbricate faults and related folds as well as a series klippe... |
| Keywords: | structural and geophysical modeling structural deformation course structural deformation pattern the middle section of Longmen Mountains |
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