U.S.-U.K. Cooperative Research: Fluid Flow, Mass Transfer, and Cooling History of the Cuillin Complex, Isle of Skye, NWScotland

这项为期两年的岩石学和地球化学奖项将支持明尼苏达大学的伊藤博士和苏格兰格拉斯哥大学的布莱恩·贝尔博士之间的合作研究。拟议项目的目标是为位于苏格兰西北部斯凯岛的典型火山区Culin复合体生成一套新的稳定同位素、结构、石油化学和岩相图数据。这些数据将被用来定量描述与该区域冷却历史有关的热液流动和传质。翠林杂岩由多个同心的火成岩侵入体组成，由显著的地质时间间隔隔开。最近的同位素研究表明，流体流动有两个或两个以上的阶段。伊藤之前在这一领域的研究表明，裂缝中的沟道化流动可能是重要的，在这个项目中，她和贝尔提议进一步研究这个问题。调查将通过详细绘制几何图形、矿脉分布、矿物丰度和岩石成分变化来描述流体流动和传质。实地调查和抽样将联合进行。实验室分析将在苏格兰和美国进行。贝尔博士在格拉斯哥的团队将生成石化数据，使用电子探针分析仪确定样品的矿物组成。伊藤博士将对分离出的矿物样品和整个岩石进行稳定同位素分析。这项研究结合了Ito和Bell的互补专业知识，预计将促进对地壳中岩浆(熔融物质)冷却过程中热、机械和化学过程相互作用的理解。

This two-year award in petrology and geochemistry will support collaborative research between Dr. Emi Ito of the University of Minnesota and Dr. Brian Bell of the University of Glasgow, Glasgow, Scotland. The objective of the proposed project is to generate a new set of stable isotopic, structural, petrochemical, and petro- graphic data on the Cuillin Complex, a classic, volcanic region located on the Isle of Skye, Northwest Scotland. The data will be used to quantitatively characterize the hydrothermal fluid flow and mass transfer in relation to the cooling history of the region. The Cuillin Complex consists of multiple concentric igneous intrusions separated by significant geological time gaps. Recent isotopic studies suggest two or more phases of fluid flow. Ito's previous research in this area suggest that a channelized flow through fractures may have been important and in this project she and Bell propose to investigate this question further. The investigation will describe the fluid flow and mass transfer by detailed mapping of the geometry, the distribution of the veins, abundance of minerals, changes in rock compositions. Fieldwork and sampling will be conducted jointly. The laboratory analysis will be handled in both Scotland and the U.S. Dr. Bell's group in Glasgow will generate the petrochemical data, determine the mineral composition of the samples using electron microprobe analyzer. Dr. Ito will perform the stable isotope analysis of the separated mineral samples and whole rocks. This research combines the complementary expertise of Ito and Bell and is expected to advance understanding of the interactions of thermal, mechanical and chemical processes during the cooling of magmas (molten materials) in the earth's crust.