| 华北板块北缘东段中元古代造山带地质特征及构造演化 |
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| 引用本文： | 刘锦,李东涛,蒯兵,李玉超,彭游博,赵辰,杨仲杰,刘文彬.华北板块北缘东段中元古代造山带地质特征及构造演化[J].地质与资源,2013,22(6):435-443. |
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| 作者姓名： | 刘锦 李东涛 蒯兵 李玉超 彭游博 赵辰 杨仲杰 刘文彬 |
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| 作者单位： | 辽宁省地质矿产调查院, 辽宁 沈阳 110031 |
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| 基金项目： | 中国地质调查局“辽宁1∶25万阜新市（K51C002002）幅区调修测”项目（编号1212011120728）资助. |
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| 摘 要： | 研究区内的中元古代魏家沟岩群原岩为一套碳酸盐岩、陆缘碎屑岩及火山岩建造,形成于大陆裂谷—活动大陆边缘阶段,并于1036 Ma左右遭受变质变形.通过岩浆岩形成构造环境的判别,研究区中元古代岩浆活动贯穿于板块碰撞前、同碰撞及碰撞后.伴随着造山带的演化,本区中元古代经历了3期韧性变形,分别形成于大陆裂谷、活动大陆边缘及碰撞造山阶段.通过上述研究,确定了本区中元古代造山带的存在,并经历了大陆裂谷—被动大陆边缘—活动大陆边缘—碰撞造山的地质演化过程,证实了格林维尔造山运动在华北板块北缘的存在和对中元古代末期Rodinia超大陆拼合的响应.
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| 关 键 词： | 华北板块北缘 中元古代造山带 构造演化 同碰撞花岗岩 魏家沟岩群 |
| 收稿时间： | 2012-07-10 |
MESOPROTEROZOIC OROGENIC BELT IN THE EAST PART OF THE NORTHERN MARGIN OF NORTH CHINA PLATE： Geologic Characteristics and Tectonic Evolution |
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| LIU Jin,LI Dong-tao,KUAI Bing,LI Yu-chao,PENG You-bo,ZHAO Chen,YANG Zhong-jie,LIU Wen-bin.MESOPROTEROZOIC OROGENIC BELT IN THE EAST PART OF THE NORTHERN MARGIN OF NORTH CHINA PLATE： Geologic Characteristics and Tectonic Evolution[J].Geology and Resources,2013,22(6):435-443. |
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| Authors: | LIU Jin LI Dong-tao KUAI Bing LI Yu-chao PENG You-bo ZHAO Chen YANG Zhong-jie LIU Wen-bin |
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| Institution: | Liaoning Institute of Geology and Mineral Resources Survey, Shenyang 110031, China |
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| Abstract: | The Weijiagou rock group,originally a suite of carbonate rocks,clastic rocks and volcanic rocks,was formed during the continental rift-active continental margin stage,with metamorphism and deformation occurred in 1036 Ma.Based on the the tectonic environment discrimination of magmatic rocks,the Mesoproterozoic magmatism of the studied area lasted throughout the pre-,syn-and post-collision periods.Accompanying with the evolution of orogenic belt,this region suffered three times of ductile deformation,which separately formed in the stages of continental rift,active continental margin and collision-orogeny.Research has determined the existence of the Mesoproterozoic orogenic belt in the studied area,which experienced the process of continental rift,passive continental margin,active continental margin and collision-orogeny.It is also confirmed that the Grenville orogeny took place in the northern margin of North China plate and responded to the convergence of Rodinia super continent in late Mesoproterozoic. |
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| Keywords: | northern margin of North China plate Mesoproterozoic orogenic belt tectonic evolution syn-collisional granite Weijiagou rock group |
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