| 南秦岭佛坪隆起的成因探讨——构造解析的证据 |
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| 引用本文： | 查显锋,董云鹏,李玮,杨钊,万斌,杨晨.南秦岭佛坪隆起的成因探讨——构造解析的证据[J].大地构造与成矿学,2010,34(3). |
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| 作者姓名： | 查显锋 董云鹏 李玮 杨钊 万斌 杨晨 |
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| 作者单位： | 西北大学,大陆动力学国家重点实验室,西北大学,地质学系,陕西,西安,710069 |
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| 基金项目： | 国家自然科学基金，西北大学大陆动力学国家重点实验室MOST联合资助 |
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| 摘 要： | 通过对佛坪隆起基底及其周围地区构造面理和线理的系统测量和统计,恢复其古应力场,揭示区域构造应力场的分布规律,进而探讨佛坪隆起的成因机制。研究结果表明,佛坪隆起主体及其北部龙草坪隆起区外围地层中的构造片理呈外倾的封闭环状展布,结合古构造应力场分析,证明佛坪基底抬升主要生成于穹状隆起,这种穹状隆升与该区岩浆侵入活动密切相关。综合区域构造解析与古应力场分析表明,佛坪穹隆是在早期近垂向的穹状隆升的基础上,叠加了后期南北向挤压构造才奠定了其基本构造面貌。
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| 关 键 词： | 南秦岭 佛坪隆起 构造解析 古应力场 |
Uplifting Process of Foping Dome in Southern Qinling:Constrained by Structural Analysis |
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| ZHA Xianfeng,DONG Yunpeng,LI Wei,YANG Zhao,WAN Bin,YANG Chen.Uplifting Process of Foping Dome in Southern Qinling:Constrained by Structural Analysis[J].Geotectonica et Metallogenia,2010,34(3). |
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| Authors: | ZHA Xianfeng DONG Yunpeng LI Wei YANG Zhao WAN Bin YANG Chen |
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| Institution: | ZHA Xianfeng,DONG Yunpeng,LI Wei,YANG Zhao,WAN Bin and YANG Chen(State Key Laboratory of Continental Dynamics/Department of Geology,Northwest University,Xi'an 710069,Shaanxi,China) |
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| Abstract: | The Foping dome is located in the junction of the Eastern and Western Qinling,and mainly composed of Precambrian metamorphic basement rock and widespread Indosinian granite intruded into the former.The Foping dome underwent multi-period and multilevel deformation.Analysis of palaeotectonic stress field was performed on the Foping dome and peripheral area by measuring and counting the foliation and lineation of the rocks.The results show that the foliation of the strata exhibit circle features with outward t... |
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| Keywords: | Southern Qinling Foping dome structural analysis palaeostress field |
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