| Estimation of the Primary Magma Compositions of an Igneous Rock Series Petrogenetically Associated with Fractional Crystallization with Special Reference to Element Abundance Relationships |
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| 作者姓名： | 汪云亮 张万林 |
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| 作者单位： | [1]Department3,ChengduInstituteofTechnology,Chendu,Sichuan610059 [2]Department3,ChengduInstituteofTechnolog |
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| 摘 要： | A primary magma not only represents the starting point of a fractional crystallization process, but also is the product of an equilibrium or fractional partial melting process in a mantle.Element abundance relationships in the primary magma obey both law of power function for fractional crystallization and the law of fractional linear function for equilibrium partial melting .Based on this double nature of the primary magma, the authors advanced a principle to restore the primary magma composition from that of an igneous rock series with petrogenesis of fractional crystallization and put forward an approach of estimating the element abundance of the primary magma, exempli-fied by the rar-earth elements in the Andes volcanic rock series.
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| 关 键 词： | 火成岩 元素富集 岩成成因 岩浆 结晶化 |
Estimation of the primary magma compositions of an igneous rock series petrogenetically associated with fractional crystallization with special reference to element abundance relationships |
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| Wang Yunliang,Zhang Wanlin,He Wentong,Zhang Nai.Estimation of the Primary Magma Compositions of an Igneous Rock Series Petrogenetically Associated with Fractional Crystallization with Special Reference to Element Abundance Relationships[J].Chinese Journal of Geochemistry,1994,13(3):212-222. |
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| Authors: | Wang Yunliang Zhang Wanlin He Wentong Zhang Nai |
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| Institution: | (1) Department 3, Chengdu Institute of Technology, Chengdu, 610059 Sichuan |
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| Abstract: | A primary magma not only represents the starting point of a fractional crystallization process, but also is the product of
an equilibrium or fractional partial melting process in a mantle. Element abundance relationships in the primary magma obey
both the law of power function for fractional crystallization and the law of fractional linear function for equilibrium partial
melting. Based on this double nature of the primary magma, the authors advanced a principle to restore the primary magma composition
from that of an igneous rock series with petrogenesis of fractional crystallization and put forward an approach of estimating
the element abundance of the primary magma, exemplified by the rare-earth elements in the Andes volcanic rock series. |
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| Keywords: | mande source primary magma composition fractional crystallization element abundance relationship |
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