Advection-Diffusion Controlled Lithium Isotopic Distribution in Contact Aureoles: A Case Study from the Florence County Pegmatites, Wisconsin

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dc.contributor.advisorHier-Majumder, Saswataen_US
dc.contributor.advisorRudnick, Roberta Len_US
dc.contributor.authorLiu, Xiaomingen_US
dc.contributor.departmentGeologyen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2010-02-19T06:41:24Z
dc.date.available2010-02-19T06:41:24Z
dc.date.issued2009en_US
dc.description.abstractStable isotopes are useful tracers of fluid-rock interactions in contact aureole settings. To date, only a few case studies have used Li isotopes to study fluid-rock interactions in contact aureole settings. These studies highlight the very large Li isotopic fractionation that can be generated in these settings via diffusion of Li from the pluton into the country rocks, but none of these studies have generated a complete and detailed section of the contact aureole needed to understand the Li distributions. Here, I report the results from a combination of Li isotope analyses and 2-D advection-diffusion modeling for two detailed profiles through country rocks adjacent to Li-rich pegmatite dikes in the Florence County pegmatite field. The results show that the Li concentration and isotopic distribution in the two contact profiles is consistent with fluid infiltration and diffusion of Li through a grain boundary fluid from the pegmatites into their country rocks.en_US
dc.identifier.urihttp://hdl.handle.net/1903/9856
dc.subject.pqcontrolledGeologyen_US
dc.subject.pqcontrolledGeochemistryen_US
dc.subject.pqcontrolledGeophysicsen_US
dc.subject.pquncontrolledAdvection-Diffusionen_US
dc.subject.pquncontrolledFluid Flowen_US
dc.subject.pquncontrolledLithium Isotopesen_US
dc.subject.pquncontrolledNumerical Modelingen_US
dc.subject.pquncontrolledStable Isotopesen_US
dc.titleAdvection-Diffusion Controlled Lithium Isotopic Distribution in Contact Aureoles: A Case Study from the Florence County Pegmatites, Wisconsinen_US
dc.typeThesisen_US

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