Noble Gas Studies of the Oceanic Mantle
Noble Gas Studies of the Oceanic Mantle
批准号:
9618101
负责人:
Mark Kurz
金额:
$33.36万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1997
资助国家:
美国
项目状态:
已结题
起止时间:
1997-03-01 至 2000-02-29
中文摘要
本研究的总体目标是利用海洋火山岩中的稀有气体分布和同位素组成来约束地幔的长期脱气行为。新的测量将把氦的各向同性变化与较重的稀有气体(特别是Ne、ar和Xe)以及其他地球化学示踪剂(如Sr、Nd和Pb同位素)联系起来。特别令人感兴趣的是一套来自超快速扩张的东太平洋隆起的海洋玄武岩玻璃,以及附近的海山,它们被记录得非常好,是稀有气体研究的理想场所。激光提取技术可以直接检测大洋中脊和大洋岛屿单个样品中的稀有气体分布,从而确定地幔衍生火山岩中稀有气体的居住地,并限制重要地幔矿物相中稀有气体的相容性程度。这些数据还将有助于限制大洋中脊下的融化动态,以及海山形成的机制
英文摘要
9618101 Kurz The overall goal of this research is to use the noble gas distribution and isotopic compositions in oceanic volcanic rocks to constrain the long-term degassing behavior of the earth's mantle. New measurements will related helium isotropic variations to the heavier noble gases (particularly Ne, ar, and Xe) as well as other geochemical tracers such as Sr, Nd, and Pb isotopes. Of particular interest is a suite of oceanic basalt glasses from the super-fast spreading East Pacific Rise, and the nearby seamounts, which are extremely well documented and are ideal for the noble gas studies. Laser extraction techniques will allow direct examination of the noble gas distribution within individual samples from the mid-ocean ridges and oceanic islands, thus identifying the noble gas residence sites in mantle derived volcanic rocks and constraining the degree of noble gas compatibility within important mantle mineral phases. The data will also help constrain the dynamic of melting beneath the mid ocean ridges and the mechanisms by which seamounts are formed.1
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MRI: Acquisition of A New Accelerator Mass Spectrometer for Radiocarbon Measurements
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批准号:2018550
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项目类别:Standard Grant
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资助金额:$166.13万
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财政年份:2020
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财政年份:2010
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Periglacial Landscape Evolution in Antarctica: New Constraints on Patterned Ground Formation
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批准号:0839045
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财政年份:2009
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New Seafloor Sampling Methods for Noble Gases: A Trial at Loihi Seamount
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Upgrade of a Helium Isotope Mass Spectrometer
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Noble Gas Studies of the Pacific Mantle
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批准号:0525864
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Collaborative Research: A Proposal for the Cosmic-Ray Produced Nuclide Systematics on Earth (CRONUS-Earth) Project
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批准号:0345595
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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:2005
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负责人:Mark Kurz
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依托单位:
Collaborative Research: Constraining Late Pleistocene Tropical Climates by Dating and Modeling Former Glaciers
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批准号:0234056
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项目类别:Continuing Grant
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资助金额:$11.71万
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财政年份:2003
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依托单位:
Evolution of the Galapagos Hotspot
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批准号:0126097
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资助金额:$23.09万
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财政年份:2002
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依托单位:
Cosmogenic Chronology of the Holocene Deglaciation of Iceland
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批准号:0214059
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财政年份:2002
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负责人:Mark Kurz
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依托单位:
Phase II Technician Support for Noble Gas Geochemistry
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批准号:0132265
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项目类别:Continuing Grant
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资助金额:$13.94万
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财政年份:2002
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依托单位:
Chronology of the West Antarctic Ice Sheet: New Evidence from Marie Byrd Land Nunataks
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批准号:0087709
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项目类别:Standard Grant
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资助金额:$17.63万
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财政年份:2001
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负责人:Mark Kurz
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依托单位:
Collaborative Research: West Antarctic Ice-Sheet and Alpine Glacier Variability During the Latest Pleistocene: An Integrated Radar, Drilling and Exposure-Age Study in McMurdo Sound
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批准号:0003873
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项目类别:Standard Grant
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资助金额:$3.05万
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财政年份:2001
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负责人:Mark Kurz
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依托单位:
Collaborative Research The Leading Edge of the Galapagos Hotspot, A New Window into the Mantle
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批准号:0002461
-
项目类别:Continuing Grant
-
资助金额:$41.78万
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财政年份:2001
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负责人:Mark Kurz
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依托单位:
Collaborative Research: Accretion of Interplanetary Dust: A New Record from 3He in Polar Ice Cores
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批准号:9909663
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项目类别:Continuing Grant
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资助金额:$7.42万
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财政年份:2000
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负责人:Mark Kurz
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依托单位:
Landscape Evolution and Ice Sheet Stability: New Chronologies from the Transantarctic Mountains
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批准号:9814888
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项目类别:Continuing Grant
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资助金额:$16.0万
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财政年份:1999
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负责人:Mark Kurz
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依托单位:
A New Pleistocene Glacial Chronology from Patagonia
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批准号:9809601
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项目类别:Continuing Grant
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资助金额:$18.76万
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财政年份:1998
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负责人:Mark Kurz
-
依托单位:
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