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

这个为期两年的岩石学和地球化学奖将支持明尼苏达大学的伊藤Emi博士和苏格兰格拉斯哥大学的Brian Bell博士之间的合作研究。拟议项目的目标是生成一套新的稳定同位素、结构、石化和岩石学数据，这些数据来自于位于苏格兰西北部斯凯岛的典型火山区域Cuillin复合体。这些数据将用于定量表征与该地区冷却历史有关的热液流体流动和传质。库林杂岩体由多个同心火成岩侵入体组成，它们被明显的地质年代间隔隔开。最近的同位素研究表明流体的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，通过裂缝的通道化流动可能是重要的，在这个项目中，她和贝尔建议进一步研究这个问题。这项调查将通过详细的几何图、矿脉分布、矿物丰度、岩石成分变化来描述流体流动和质量传递。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成分。伊藤博士将对分离出来的矿物样本和整个岩石进行稳定同位素分析。这项研究结合了伊藤和贝尔的互补专业知识，有望促进对地壳岩浆（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.