Collaborative Research: Origin, Composition, and Degassing Characteristics of Magmatic Sulfides in Intermediate to Silicic Volcanic Rocks

这个项目将更全面地记录主要和微量元素 岩浆硫化物和寄主岩石的成分 廷蒂奇山火山喷流相侵入体 组 此外，那些来自鱼峡谷凝灰岩（和 相关火山单元）、主教凝灰岩和内华达州中部 火山口复合体（威廉姆斯岭和莫雷峰的凝灰岩）将被 分析比较的目的。 通过梳理这些数据 硫化物成分与岩浆 每一个火山系统的演化， 模拟岩浆的起源和模态丰度的变化 硫化物。 稳定性和脱气/出溶特性 这些硫化物也将被检查。 这些数据应该会有所帮助 建立了一个关于岩浆硫化物作用的一般模型， 设定各种热液成矿流体的金属配比。

This project will more fully document the major and trace element composition of magmatic sulfides and the host rocks from the vent-facies intrusions and flows of the Tintic Mountain Volcanic Group. In addition, those from the Fish Canyon Tuff (and associated volcanic units), Bishop Tuff, and Central Nevada Caldera Complex (tuff of Williams Ridge and Morey Peak) will be analyzed for comparison purposes. By combing these data on sulfide compositions with intensive parameters and magmatic evolution for each volcanic system, it should be possible to model the origin and variations in modal abundance of magmatic sulfides. The stability and degassing/exsolution characteristics of these sulfides will also be examined. These data should help develop a general model about the role of magmatic sulfides in setting the metal ratios of various hydrothermal ore fluids.