Terrestrial and Extraterrestrial Osmium in Marine Sediments
Terrestrial and Extraterrestrial Osmium in Marine Sediments
批准号:
9115253
负责人:
Gregory Ravizza
金额:
$7.8万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-12-01 至 1993-11-30
中文摘要
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英文摘要
Objective of this study is to determine the magnitude of temporal and spatial variations in the flux of ectraterrestrial Osmium in pelagic clays over the reatively constant background levels. Coupled study of excess 230-Th and Os in recent pelagic clays will allow the determination of present day flux of Os in a site in N. Pacific. The study will test if Os can be used as a tracer for calculating precise sedimentation rates and as a geochronologic tool.
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Collaborative Research: He and Os isotope investigation of Miocene marine sediments: particulate extraterrestrial matter as a paleoflux tracer
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批准号:1061061
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项目类别:Standard Grant
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资助金额:$17.09万
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财政年份:2011
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负责人:Gregory Ravizza
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依托单位:
The Response of the Marine Osmium Isotope Record to Impact Events
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批准号:0843930
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项目类别:Continuing Grant
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资助金额:$20.0万
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财政年份:2009
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负责人:Gregory Ravizza
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依托单位:
Collaborative Research: Intercalibrating Analytical Methods for Osmium Isotopes and Concentrations in Seawater
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批准号:0752405
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项目类别:Standard Grant
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资助金额:$2.79万
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财政年份:2008
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负责人:Gregory Ravizza
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依托单位:
Collaborative Research: The marine Os isotope record of extreme Cenozoic climates
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批准号:0526559
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项目类别:Continuing Grant
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资助金额:$19.48万
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财政年份:2005
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负责人:Gregory Ravizza
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依托单位:
Late Cretaceous Osmium Isotope Stratigraphy
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批准号:0309264
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项目类别:Standard Grant
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资助金额:$20.95万
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财政年份:2003
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负责人:Gregory Ravizza
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依托单位:
Acquisition of a high resolution, sector field, ICP-MS and laser ablation system
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批准号:0215297
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项目类别:Standard Grant
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资助金额:$31.3万
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财政年份:2002
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负责人:Gregory Ravizza
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依托单位:
Molybdenum Biogeochemistry in the Open Ocean
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批准号:0096453
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项目类别:Standard Grant
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资助金额:$20.99万
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财政年份:2001
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负责人:Gregory Ravizza
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依托单位:
The Marine OS Isotope Record of the Late Eocene And Early Oligocene
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批准号:0118380
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项目类别:Continuing Grant
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资助金额:$24.59万
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财政年份:2001
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负责人:Gregory Ravizza
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依托单位:
Seawater 186 Os/188 Os Variations During the Cenozoic
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批准号:9819296
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项目类别:Standard Grant
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资助金额:$20.41万
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财政年份:1999
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负责人:Gregory Ravizza
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依托单位:
Os Isotopic Variations in Obducted Metalliferous Sediments
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批准号:9804864
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项目类别:Standard Grant
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资助金额:$17.54万
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财政年份:1998
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负责人:Gregory Ravizza
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依托单位:
Osmium Isotopes in Mid-Ocean Ridge Hydrothermal Systems
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批准号:9504276
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项目类别:Standard Grant
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资助金额:$5.76万
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财政年份:1996
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负责人:Gregory Ravizza
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依托单位:
Variations of the Os Isotopic Composition of Seawater Acrossthe Cretaceous-Tertiary Boundary
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批准号:9417948
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项目类别:Continuing Grant
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资助金额:$13.23万
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财政年份:1995
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负责人:Gregory Ravizza
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依托单位:
Organic-rich and Metalliferous Marine Sediments as Recorders of Past Changes in the OS Isotopic Composition of Seawater
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批准号:9301049
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项目类别:Continuing Grant
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资助金额:$14.53万
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财政年份:1994
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负责人:Gregory Ravizza
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依托单位:
Sedimentary Geochronology: Coupled Studies of Re-Os and U-Pb
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批准号:9204409
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项目类别:Continuing Grant
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资助金额:$8.99万
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财政年份:1992
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负责人:Gregory Ravizza
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依托单位:
海外基金