Collaborative Research: Petrogenetic Significance of AFM Mineral-Felsic Liquid Equilibria: Continuation of an Experimental Study (with RPI)

该项目涉及矿物的实验测定- 作为压力函数的长英质系统中的熔体平衡， 温度、水含量和微量元素浓度。 将特别强调次要要素的作用 （铝、铁和镁）， 长英质岩浆的特征， 它们进化历史的重要方面。 自然 将添加含水矿物（黑云母、角闪石、白云母） 石英-长石组合物来测试它们的稳定范围 和分解反应以及共存的 液体. 这些实验的结果将有助于 限制了长英质液体的组成变化， 岩浆作为源成分和条件的函数， 将测试镁铁质岩石作为资源的可行性 的原始trndhjemitic岩浆，并将限制范围， 绿帘石和白云母共存的条件 岩浆液体

This project involves the experimental determination of mineral- melt equilibria in felsic systems as functions of pressure, temperature, water content, and minor element concentrations. Particular emphasis will be placed on the role of minor elements (aluminum, iron, and magnesium) which lend distinctive signatures to felsic magmas and which may serve to distinguish important aspects of their evolutionary histories. Natural hydrous minerals (biotite, hornblende, muscovite) will be added to quartz-feldspar compositions to test their stability ranges and breakdown reactions and the compositions of coexisting liquids. The results of these experiments will help to constrain the compositional variability of felsic liquids and magmas as functions of source composition and conditions of generation, will test the viability of mafic rocks as sources of primary trndhjemitic magmas, and will constrain the range of conditions over which epidote and muscovite can coexist with magmatic liquids.