| Niobium-tantalum Fractionation During Slab Subduction:Implications for the Formation of Continental Crust |
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| 作者姓名： | Yilin Xiao Weidong Sun Jochen Hoefs Klaus Simon Zeming Zhang Shuguang Li |
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| 摘 要： | Compared with the oceanic crust, knowledge about the formation of the continental crust (CC) is relatively poor. Although melting of subducted slabs in the early history of the Earth has been considered as the major way that shaped the chemical characteristics of the CC by most geologists, as the CC shares many characteristics with modern adakites, some geologists argued that Archean TTG was formed in the same way as modern arcs rather than slab melting, whereas others proposed that melting at the bottom of the thickened oceanic crust was more important. Recently,the debate is mainly focused on the unique subchondritic Nb/Ta value of the CC, and particularly, how Nb and Ta fractionated from each other and consequently how, in detail, the CC was built.
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Niobium-tantalum Fractionation During Slab Subduction:Implications for the Formation of Continental Crust |
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| Yilin Xiao,Weidong Sun,Jochen Hoefs,Klaus Simon,Zeming Zhang,Shuguang Li.Niobium-tantalum Fractionation During Slab Subduction:Implications for the Formation of Continental Crust[J].Bulletin of Mineralogy Petrology and Geochemistry,2007,26(Z1). |
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| Authors: | Yilin Xiao Weidong Sun Jochen Hoefs Klaus Simon Zeming Zhang Shuguang Li Albrecht W Hofmann |
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| Abstract: | |
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| Keywords: | niobium-tantalum fractionation slab subduction formation of continental crust |
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