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Spatial Patterns of Isotopic Variations in Reactive Fluid-Rock Systems: Determining Transport Properties, Reaction Rates and Time-Scales of Metamorphism

Spatial Patterns of Isotopic Variations in Reactive Fluid-Rock Systems: Determining Transport Properties, Reaction Rates and Time-Scales of Metamorphism
反应流体-岩石系统中同位素变化的空间模式：确定输运特性、反应速率和变质作用的时间尺度
批准号：
9316283
负责人：
Donald DePaolo
金额：
$12.3万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1994
资助国家：
美国
项目状态：
已结题
起止时间：
1994-01-01 至 1996-06-30
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316283&HistoricalAwards=false
关键词：
SpatialPatternsIsotopicVariationsReactive

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英文摘要
9316283 DePaolo The proposed research will develop and test a new approach to using isotopic variations in metamorphic rocks to measure bulk cation diffusivities, rates of metamorphic reactions, and durations of metamorphic conditions. The objective is to apply petrological and isotopic tools concurrently and complementarily. The research comprises two parts: (1) developing numerical codes to simulate one-dimensional isotopic redistribution in layered metamorphic rocks; the codes are used for generic experiments of isotope behavior, and for modelling in specific field situations, and (2) applying the exchange model to upper amphibolite facies, garnetiferous gneisses of the Tehachapi Mountains, southern California.
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