| 华北克拉通破坏前的状态——对讨论华北克拉通破坏问题的一个建议 |
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| 引用本文： | 翟明国.华北克拉通破坏前的状态——对讨论华北克拉通破坏问题的一个建议[J].大地构造与成矿学,2008,32(4). |
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| 作者姓名： | 翟明国 |
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| 作者单位： | 中国科学院地质与地球物理研究所,中国科学院矿产资源重点实验室,北京,100029 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 中生代华北克拉通破坏是目前引人关注的研究课题。鉴于目前一些文章在表达克拉通状态时引用的地质图件不准确,忽略了华北克拉通从古至今的不同阶段的演化,不能正确的表达克拉通在破坏之前或之后的状态,本文强调华北克拉通破坏前的状态是研究的重要基础。华北克拉通是经历过多期克拉通化形成的。
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| 关 键 词： | 华北 克拉通 破坏前的状态 |
STATE OF LITHOSPHERE BENEATH THE NORTH CHINA CRATON BEFORE THE MESOZOIC LITHOSPHERIC DISRUPTION: A SUGGESTION |
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| ZHAI Mingguo.STATE OF LITHOSPHERE BENEATH THE NORTH CHINA CRATON BEFORE THE MESOZOIC LITHOSPHERIC DISRUPTION: A SUGGESTION[J].Geotectonica et Metallogenia,2008,32(4). |
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| Authors: | ZHAI Mingguo |
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| Abstract: | In recent years,the extent and cause of Mesozoic lithospheric disruption beneath the NCC have been discussed extensively.However,some geological sketch maps in the published papers showing the state of lithosphere beneath the North China Craton(NCC)before the Mesozoic lithospheric disruption are not reasonable,which ignore multi-stage tectonic evolution process of the North China Craton.Author,here,would like emphasize following points:(1)The NCC is one of the oldest cratons in the world,which has complicated tectonic history with 3.8Ga continental rocks.(2)The NCC experienced multi-stage cratonization.It fundamentally formed at the end of Archean,and ultimately completed cratonization at Paleoproterozoic of 1.9～1.85Ga.(3)The NCC came upon the stage of platform regime since 1.8Ga,marked by Proterozoic continental rift and Phanerozoic sedimentary basin within craton.(4)A Mesozoic tectonic inversion occurred in eastern North China with a large-scale lithospheric thinning beneath the sub-continent.Therefore,the state of the NCC before the disruption is a multi-stage evolving lithosphere,other than a 2.5Ga craton or a 1.9～1.85Ga craton. |
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| Keywords: | North China Craton lithosphere state before Mesozoic disruption a suggestion |
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