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
批准号:
9316283
负责人:
Donald DePaolo
金额:
$12.3万
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
中文摘要
9316283 DePaolo拟议的研究将开发和测试一种新的方法,利用变质岩中的同位素变化来测量整体阳离子扩散系数、变质反应速率和变质条件的持续时间。其目标是同时和互补地应用岩石学和同位素工具。这项研究包括两个部分:(1)开发数值程序来模拟层状变质岩中的一维同位素再分布;这些程序用于一般的同位素行为实验,并用于特定野外情况的模拟;(2)将交换模型应用于加利福尼亚州南部特哈查皮山脉的上角闪岩相、石榴岩片麻岩。
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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EAGER: Thermo-hydro-chemical modeling framework for mid-ocean ridge hydrothermal systems
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批准号:2103214
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项目类别:Standard Grant
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资助金额:$8.48万
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财政年份:2021
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负责人:Donald DePaolo
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依托单位:
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批准号:2023513
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项目类别:Standard Grant
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资助金额:$31.0万
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财政年份:2020
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依托单位:
Effects of paleoseawater composition on chemical and isotopic exchange at mid-ocean ridges
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批准号:1737186
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项目类别:Standard Grant
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资助金额:$32.72万
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财政年份:2017
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负责人:Donald DePaolo
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依托单位:
Collaborative Research: Lhasa Block Top to Bottom--Lithospheric Evolution of Asia's Leading Edge
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批准号:1111959
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项目类别:Continuing Grant
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资助金额:$48.54万
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财政年份:2011
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负责人:Donald DePaolo
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依托单位:
Ca-Mg Isotopic Probe of Transport Processes in High Temperature Geochemical Systems
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批准号:1050000
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项目类别:Continuing Grant
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资助金额:$47.33万
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财政年份:2011
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负责人:Donald DePaolo
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依托单位:
A Documentary Film: Earth As We Know It
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批准号:1049231
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项目类别:Standard Grant
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资助金额:$13.4万
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财政年份:2010
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负责人:Donald DePaolo
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依托单位:
HAWAII'S VOLCANOES: A MEDIA PROJECT
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批准号:0818180
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项目类别:Standard Grant
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资助金额:$7.47万
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财政年份:2009
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负责人:Donald DePaolo
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依托单位:
Diffusive Isotopic Fractionation and the Structure of Silicate Liquids
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批准号:0838168
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项目类别:Continuing Grant
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资助金额:$18.05万
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财政年份:2009
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负责人:Donald DePaolo
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依托单位:
Transport times and ages of Quaternary fine-grained terrestrial sediments using U series isotopes
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批准号:0617704
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2006
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负责人:Donald DePaolo
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依托单位:
Structure of the Hawaiian Mantle Plume: Geochemical-Isotopic Mapping Using Post-Shield Lavas
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批准号:0408521
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2004
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负责人:Donald DePaolo
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依托单位:
Acquisition of a High Precision Thermal Ionization Mass Spectrometer for Geochemical Research
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批准号:0236741
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项目类别:Standard Grant
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资助金额:$28.0万
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财政年份:2003
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负责人:Donald DePaolo
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依托单位:
Sr Isotopic Evolution of the Mantle: Constraints on Accretion, Recycling, and Crustal Growth
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批准号:0208671
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项目类别:Standard Grant
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资助金额:$10.53万
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财政年份:2002
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负责人:Donald DePaolo
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依托单位:
U-Th-Pb Geochronology and Mineral Pb Systematics of Quaternary Basalt
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批准号:9909590
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项目类别:Standard Grant
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资助金额:$18.97万
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财政年份:2000
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负责人:Donald DePaolo
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依托单位:
CSEDI Collaborative Research: A Coupled Geodynamic-Geochemical Study of the Hawaiian Plume
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批准号:0002629
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项目类别:Standard Grant
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资助金额:$2.0万
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财政年份:2000
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负责人:Donald DePaolo
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依托单位:
The Ca Isotopic Evolution of the Oceans
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批准号:9909639
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项目类别:Continuing Grant
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资助金额:$11.87万
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财政年份:2000
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负责人:Donald DePaolo
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依托单位:
Reaction Lengths and Reaction Rates in Metamorphic Rock Systems Using Isotopic and Age Zoning in Garnet Porphyroblasts
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批准号:9805218
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项目类别:Standard Grant
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资助金额:$12.5万
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财政年份:1998
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负责人:Donald DePaolo
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依托单位:
Isotopic Studies of Mantle-Crust Evolution
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批准号:9614471
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项目类别:Standard Grant
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资助金额:$22.5万
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财政年份:1997
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负责人:Donald DePaolo
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依托单位:
Collaborative Research: Scientific Drilling in Hawaii: Physics and Chemistry of Mantle Plumes
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批准号:9528544
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:1996
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负责人:Donald DePaolo
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依托单位:
A New Method of Assessing Trophic Levels in Fossil Organisms Using Calcium Stable Isotopes
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批准号:9526997
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项目类别:Standard Grant
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资助金额:$11.0万
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财政年份:1996
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负责人:Donald DePaolo
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依托单位:
Metamorphism and Intrusion Chronology and Tectonic Evolution of the Central and Southern Transantarctic Mountains Using Sm-Nd Isotopes
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批准号:9318838
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项目类别:Continuing Grant
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资助金额:$13.45万
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财政年份:1994
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负责人:Donald DePaolo
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依托单位:
海外基金