| Geochemistry and chronology of Se＇ ertengshan greenstone, Inner Mongolia |
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| 引用本文： | 刘建忠,王莉莉,张福勤,李春来,邹永廖,欧阳自远,徐琳.Geochemistry and chronology of Se＇ ertengshan greenstone, Inner Mongolia[J].中国地球化学学报,2005,24(1):51-56. |
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| 作者姓名： | 刘建忠 王莉莉 张福勤 李春来 邹永廖 欧阳自远 徐琳 |
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| 作者单位： | [1]ationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012,China [2]ZhengzhouRailwayVocationalandTechnicalCollege,Zhengzhou450052,China [3]InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing1O0101,China [4]NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012,China／／InstituteofGeochemistry,ChineseAcademyofSciences,Guiyang550002,China |
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| 摘 要： | This paper deals with the meta-mafic volcanic rocks of the Gongyiming iron deposit at Baotou, Inner Mongolia. The major and trace elements and REE data indicate that the meta-mafic volcanic rocks occurred in the environment similar to a modern continental rift. Sm-Nd and Rb-Sr isotopic studies indicated that the meta-basic rocks were formed during the Early Neoarchean from 2800 Ma to 2900 Ma and reworked during the Late Neoarchean (2500 Ma) by metamorphism. Because of the separation of the North China Craton from the Siberia Craton during the Middle Proterozoic (1600 Ma), the Rb-Sr systematics of the rocks has been changed. The Se‘ ertengshan greenstone seems to occur during the Middle Archean. A stable continental crust may have existed during the Paleoarchean.
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| 关 键 词： | 绿玉 地球化学 地质年代学 碳化-铁镁质火山岩 |
Geochemistry and chronology of Se’ ertengshan greenstone, Inner Mongolia |
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| Jianzhong Liu,Lili Wang,Fuqin Zhang,Chunlai Li,Yongliao Zou,Ziyuan Ouyang,Lin Xu.Geochemistry and chronology of Se’ ertengshan greenstone, Inner Mongolia[J].Chinese Journal of Geochemistry,2005,24(1):51-56. |
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| Authors: | Jianzhong Liu Lili Wang Fuqin Zhang Chunlai Li Yongliao Zou Ziyuan Ouyang Lin Xu |
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| Institution: | (1) National Astronomical Observatories, Chinese Academy of Sciences, 100012 Beijing, China;(2) Zhengzhou Railway Vocational and Technical College, 450052 Zhengzhou, China;(3) Institute of Geology and Geophysics, Chinese Academy of Sciences, 100101 Beijing, China;(4) Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China |
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| Abstract: | This paper deals with the meta-mafic volcanic rocks of the Gongyiming iron deposit at Baotou, Inner Mongolia. The major and
trace elements and REE data indicate that the meta-mafic volcanic rocks occurred in the environment similar to a modern continental
rift. Sm-Nd and Rb-Sr isotopic studies indicated that the meta-basic rocks were formed during the Early Neoarchean from 2800
Ma to 2900 Ma and reworked during the Late Neoarchean (2500 Ma) by metamorphism. Because of the separation of the North China
Craton from the Siberia Craton during the Middle Proterozoic (1600 Ma), the Rb-Sr systematics of the rocks has been changed.
The Se’ ertengshan greenstone seems to occur during the Middle Archean. A stable continental crust may have existed during
the Paleoarchean.
This work was granted by the Innovation Program of the CAS (KZCX2-115). |
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| Keywords: | greenstone chronology geochemistry |
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