| 地球的原始不均一性起源及其对超大型矿床分布的制约 |
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| 引用本文： | 岳宗玉,刘建忠,吴淦国,欧阳自远.地球的原始不均一性起源及其对超大型矿床分布的制约[J].矿物岩石地球化学通报,2005,24(4):357-362. |
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| 作者姓名： | 岳宗玉 刘建忠 吴淦国 欧阳自远 |
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| 作者单位： | 中国地质大学,地球科学与资源学院,北京,100083;中国科学院,国家天文台,北京,100101;中国科学院,国家天文台,北京,100101;中国科学院,地球化学研究所,贵阳,550002 |
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| 摘 要： | 本文从太阳星云演变模式入手,着重介绍地球的非均一堆积起源模式.指出地球的化学成分具有原始的不均一性;这种不均一性起源于前地球阶段堆积星子的不均一性.地球的星子吸积过程具有明显的两阶段性,即原地球吸积阶段和晚期吸积阶段,而后期的吸积过程对上地幔及地壳的化学成分不均一性的影响尤为显著.最后指出地球化学不均一性对超大型矿床分布的制约.
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| 关 键 词： | 不均一性 星子 吸积 超大型矿床 |
| 文章编号： | 1007-2802（2005）04-0357-06 |
| 收稿时间： | 2005-03-02 |
| 修稿时间： | 2005-09-01 |
Initial Heterogeneity of the Earth and Origin of Super-large Scale Ore deposit |
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| YUE Zong-yu,LIU Jian-zhong,WU Gan-guo,OUYANG Zi-yuan.Initial Heterogeneity of the Earth and Origin of Super-large Scale Ore deposit[J].Bulletin of Mineralogy Petrology and Geochemistry,2005,24(4):357-362. |
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| Authors: | YUE Zong-yu LIU Jian-zhong WU Gan-guo OUYANG Zi-yuan |
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| Institution: | YUE Zong-yu~1,LIU Jian-zhong~2,WU Gan-guo~,OUYANG Zi-yuan~2 1. Department of Geosciences and Resources,China University of Geosciences,Beijing 100083,China, 2. Institude of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China |
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| Abstract: | This paper emphatically introduced the heteroeneous accumulation model for formation of the Earth by reviewing the solar nebula evolution models. It is indicated that the Earth was chemically heterogeneous initially, which is associated with heterogeneity of planetesimals prior to the Earth forming. The planetesimals accretions of the Earth obviously have two stages, including initial accretion and late accretion. The late accretion process has strong influence on chemical heterogeneity of the upper mantle and the crust. It is indicated that the chemical heterogeneity of the Earth restricts on the distribution of super large ore deposit. |
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| Keywords: | heterogeneity planet sesimals accretion super-large ore-deposit |
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