地学前缘 ›› 2009, Vol. 16 ›› Issue (1): 155-157.

• 论文 • 上一篇    下一篇

高温高压条件下闪长岩部分熔融产物的反常现象

  

  1. 吉林大学 地球科学学院, 吉林 长春 130061

  • 出版日期:2009-02-02 发布日期:2009-02-02
  • 作者简介:马瑞(1956—),男,副教授,构造地质学专业,主要从事高温条件下岩石变形及成岩成矿研究。E-mail:zhuzp@jlu.edu.cn
  • 基金资助:

    国家自然科学基金项目(40572117)

An experimental study of the characteristics of diorite melt composition under different degree of melting

  1. College of Earth Sciences, Jilin University, Changchun 130061, China

  • Online:2009-02-02 Published:2009-02-02

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摘要：

为了考察岩石熔融过程中熔体成分的变化规律,以细粒闪长岩为样品,进行了不同熔融程度的实验研究。通过对熔体成分的分析,得出以下结论:在初始熔融条件下,熔体的成分为玄武质,随着熔融程度的增高,熔体的成分由基性向中酸性,由富钾向富钠,由强碱性向亚碱性方向演化。

关键词: 闪长岩;熔体成分;演化

Abstract:

Abstract:  In order to reveal the characteristics of diorite melt composition under different degree of melting, we performed the experiments to analyse the melt composition while the diorite was being melted under high pressure and high temperature. We came to the following conclusions. When the melting was in the first degree, the composition of the melt is that of a basalt. As the melting degree increasing, the characteristics of the melt composition were being changed from basic to  mediumacidic, from potassiumrich to sodiumrich, and from strong alkaline to alkaline and subalkaline.

Key words:

Key words: diorite; composition of melt; evolution

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