| 天然花岗岩块的熔融实验及其岩石学意义 |
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| 摘 要： | 本文详细论述了马兰峪中生代脉状花岗间长岩固体块样品的熔融实验结果,并据此讨论了部分熔融过程中的结构与成份平衡问题。实验表明,最初熔体产生于不同矿物的接触边界上,而且石英—碱性长石之间的熔体量较石英—斜长石间熔体多,而同种矿物之间一般不出现熔体。当熔融程度增高时,两种长石间也开始出现熔体。熔体成分的研究表明,初始部分熔融过程中,局部体系的平衡起着控制作用。
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| 关 键 词： | 局部平衡 部分熔融 花岗岩 |
THE MELTING EXPERIMENT OF NATURAL MASSIVE GRANITE AND ITS PETROLOGICAL SIGNIFICANCE |
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| Authors: | Wu Fuyuan Lin Qiang |
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| Institution: | Wu Fuyuan Lin Qiang |
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| Abstract: | In this paper, a detail discussion about the melting experimental result of Ma-lanyu mrssive grancdicrite is given. It is shown that the first signs of glass are always seen at the boundarise between feldspars and quartzs,and the glass between alkali-feldspar and quartz is wider than that between plagioclase and quartz. It is noted that melting is not found at the boundary between the two kinds of feldspar unless a greater degree melting has taken place. The composition of melt indicates that the local equilibrium plays a controlling role in the initial melting process. |
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| Keywords: | local equilibrium partial melting granite |
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