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Terrestrial and Extraterrestrial Osmium in Marine Sediments

Terrestrial and Extraterrestrial Osmium in Marine Sediments
海洋沉积物中的陆地和地外锇
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

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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
  • 批准号:
    1061061
  • 项目类别:
    Standard Grant
  • 资助金额:
    $17.09万
  • 财政年份:
    2011
  • 负责人:
    Gregory Ravizza
  • 依托单位:
The Response of the Marine Osmium Isotope Record to Impact Events
  • 批准号:
    0843930
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $20.0万
  • 财政年份:
    2009
  • 负责人:
    Gregory Ravizza
  • 依托单位:
Collaborative Research: Intercalibrating Analytical Methods for Osmium Isotopes and Concentrations in Seawater
  • 批准号:
    0752405
  • 项目类别:
    Standard Grant
  • 资助金额:
    $2.79万
  • 财政年份:
    2008
  • 负责人:
    Gregory Ravizza
  • 依托单位:
Collaborative Research: The marine Os isotope record of extreme Cenozoic climates
  • 批准号:
    0526559
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $19.48万
  • 财政年份:
    2005
  • 负责人:
    Gregory Ravizza
  • 依托单位:
海外基金