| 地幔柱构造与地幔动力学--兼论其在中国大陆地质历史中的表现 |
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| 引用本文： | 肖龙.地幔柱构造与地幔动力学--兼论其在中国大陆地质历史中的表现[J].矿物岩石地球化学通报,2004,23(3):239-245. |
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| 作者姓名： | 肖龙 |
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| 作者单位： | 中国地质大学,地球科学学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(40272040,40234052) |
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| 摘 要： | 地幔柱构造是基于全地慢对流模式、主要依据热点火山活动提出的新的全球构造理论。它的主要表现形式和产物是地幔柱头上部地壳抬升、岩浆活动形成大火成岩省、大型放射状岩墙群，并导致大陆裂解、板块运动和大规模成矿，是生物灭绝、磁极倒转的诱因。中国大陆的地质演化历史中保存了多期地幔柱活动印记，它们主要是华南新元古代Rodinia地幔柱、古生代古特提斯和峨眉山地幔柱和中一新生代中国东部地慢柱构造事件。上述地幔柱活动产生了地壳抬升、强烈岩浆活动、大陆伸展与裂解、岩石圈剧烈减薄和大规模成矿等重要地质事件。
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| 关 键 词： | 地幔柱 地幔动力学 成矿 岩浆活动 地壳 抬升 地质历史 中国大陆 大规模 模式 |
| 文章编号： | 1007-2802(2004)03-0239-07 |
| 修稿时间： | 2004年2月9日 |
Plume Tectonics and Mantle Dynamics:On Their Records in Chinese Continent |
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| XIAO Long Faculty of Earth Science,China University of Geosciences,Wuhan ,China.Plume Tectonics and Mantle Dynamics:On Their Records in Chinese Continent[J].Bulletin of Mineralogy Petrology and Geochemistry,2004,23(3):239-245. |
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| Authors: | XIAO Long Faculty of Earth Science China University of Geosciences Wuhan China |
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| Institution: | XIAO Long Faculty of Earth Science,China University of Geosciences,Wuhan 430074,China |
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| Abstract: | Plume tectonic is a new global tectonic theory that was proposed based on whole mantle convection and hotspot volcanisms. Plume activity usually results in crustal uplift, extensive magmatism and forming large igneous provinces and giant dyke swarms, continental breakup, plate motion, and intensive metallogenesis. Mass extinction and magnetic polar reversion may also be related to plume tectonics. Multistage plume activities take place in the geological evolution of Chinese continent. They are Neoprotozoic Rodinia plume, Paleozoic Tethys and Emeishan plume, and Mesozoic and Cenozoic plume activity in eastern China. These plume tectonics had caused crustal uplift, extensive magmatism, continental extension and breakup, significant lithosphere thinning and mineralization. |
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| Keywords: | mantle plume plume tectonics mantle dynamics magmatism Paleo-Tethys Eastern China |
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