Variations in Volatiles in Zoned Magma Bodies Based on Studies of Glass Inclusions

挥发物在岩浆系统中极其重要， 控制系统的许多性质包括：粘度， 液相线和固相线温度、扩散速率和喷发 流程. 然而，我们对它的数量和 挥发物的类型来自直接测量。 本研究 建议通过测量 矿物玻璃包裹体中挥发分含量的红外分析 技术，沿着微探针研究。 The evolution of a 气相将通过测定相关的C1/F来监测 磷灰石 用于本研究的样品将是分离的矿物质 从五个化学分区的火山灰流中的玻璃状浮石样品中， 以前收集的图纸，详细说明 地球化学和矿物学数据。 红外线研究将是 在劳伦斯利弗莫尔国家实验室完成， 现有技术的傅里叶变换红外光谱仪连接到 显微镜***//

Volatiles are extremely important in magmatic systems and control many properties of the system including: viscosity, liquidus and solidus temperatures, diffusion rates, and eruption processes. Yet very little of our knowledge about the amount and types of volatiles come from direct measurements. This study proposes to determine volatiles in magmas by measuring the volatile content in glass inclusions in minerals by infrared techniques, along with microprobe studies. The evolution of a gas phase will be monitored by determining the C1/F of associated apatites. Samples used for this study will be minerals separated from glassy pumice samples from five chemical zoned ash-flow sheets that have been collected previously, and detailed geochemical and mineralogical data. The infrared studies will be done at Lawrence Livermore National Laboratory on their sate of the art Fourier transform infrared spectrometer attached to a microscope. ***//