岩浆熔体包裹体研究进展

发布时间：2018-08-12 21:00

【摘要】：近现代对于熔体包裹体的研究已经有50余年,但它们在反映岩浆系统特征方面的价值是直至最近10~15年间才逐渐被火山学家、岩石学家和包裹体学者所意识到。熔体包裹体的研究结果之所以难以被接受主要有以下几个因素:1)缺乏可靠的分析技术;2)熔体包裹体捕获后会发生一系列的变化;3)包裹体中熔体存在不均匀的现象;4)较高的均一温度,很难测定。但随着分析方法的改进和熔体包裹体的系统研究,学者们逐渐确定了熔体包裹体在解开岩浆系统复杂性方面的实用性,可以这么说"熔体包裹体的研究正值当年"。例如:现代的研究提供了岩浆中溶解和出溶的挥发分含量的不可否认的证据,并且从熔体包裹体中得到的气相、盐类卤水和岩浆不混溶信息证明岩浆的相分离远比从结晶相图中推论得到的要复杂得多;包裹体岩相学已详细地描绘了熔体包裹体捕获之后经历的特定变化——结晶,挥发分的扩散,气相出溶,以及泄露等。因此,如果有细致的包裹体岩相学的观察以及精确的测试分析,那么,从熔体包裹体中得到的成分数据是有用且可靠的。
[Abstract]:Melt inclusions have been studied for more than 50 years in modern times, but their value in reflecting the characteristics of magmatic system has been gradually recognized by volcanologists, petrologists and inclusionists until the last 1015 years. The main reasons why the research results of melt inclusions are difficult to be accepted are as follows: 1) lack of reliable analytical techniques. 2) A series of changes will occur after the melt inclusions are captured. 4) higher uniform temperature, It is difficult to measure. However, with the improvement of analytical methods and the systematic study of melt inclusions, scholars have gradually determined the practicability of melt inclusions in solving the complexity of magmatic systems. It can be said that "the study of melt inclusions is in the same year". For example, modern research provides undeniable evidence of dissolved and exsoluble volatile matter content in magma, and gas phase derived from melt inclusions, The information of salt brine and magmatic immiscible solution proves that the phase separation of magma is much more complicated than that inferred from the crystal phase diagram. The petrography of inclusions has described in detail the specific change-crystallization after the capture of melt inclusions. The diffusion of volatile matter, gas phase dissolving, and leakage, etc. Therefore, the composition data obtained from melt inclusions are useful and reliable if detailed petrographic observation and accurate measurement and analysis are carried out.
【作者单位】：昆明理工大学国土资源工程学院;中国科学院地球化学研究所矿床地球化学国家重点实验室;魁北克大学;中国科学院广州地球化学研究所;
【基金】：国家自然科学基金项目(41502087) 中国科学院地球化学研究所矿床地球化学实验室开放基金项目(201311、201405)联合资助
【分类号】：P588.11

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