课题基金 / 基金详情

GRGC: Dating and Correlation of Paleoclimate Proxy Records

GRGC: Dating and Correlation of Paleoclimate Proxy Records
GRGC:古气候代理记录的年代测定和关联
批准号:
9405374
负责人:
Stein Jacobsen
金额:
$4.93万
依托单位:
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:
1994-08-15 至 1996-01-31

项目摘要

项目成果

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中文摘要
翻译
Jacobsen项目涉及开发一种适用于熔岩和有孔虫的高精度87Rb-86Sr测年技术。其中一个目标是通过研究历史熔岩中的大地矿物和斑晶来评价这种方法对意大利含白铁矿火山的影响。第二步是评估不平衡定年法对太平洋浅水和深水有孔虫样本的影响,以及对多巴火山灰层的有孔虫软泥进行del 234U定年的初步调查。最终目标是提供精确的时间分辨气候代理记录,以提高我们理解气候周期变化原因的能力。
英文摘要
9405374 Jacobsen Project involves development of a high-precision 87Rb-86Sr dating technique applicable to both lavas and foraminifera. One objective is the evaluation of this method for leucite-bearing Italian volcanics by study of groundmass minerals and phenocrysts in historical lavas. A second is an evaluation of the disequilibrium dating method applied to both shallow and deep water samples containing forams from the Pacific, plus initial investigation using del 234U dating of forminiferal ooze in Toba Ash horizons. The ultimate goal is to provide precisely time-resolved climate proxy records to increase our ability to understand causes of cyclic variation in climate.
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Ca Isotope Variations in Oceanic Basalts
  • 批准号:
    1144727
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $35.21万
  • 财政年份:
    2012
  • 负责人:
    Stein Jacobsen
  • 依托单位:
EAGER: A Test for the Younger Dryas Impact Hypothesis
  • 批准号:
    1007367
  • 项目类别:
    Standard Grant
  • 资助金额:
    $8.04万
  • 财政年份:
    2010
  • 负责人:
    Stein Jacobsen
  • 依托单位:
EAGER: Recycled Carbonate-Rich Sediment in the Hawaiian Plume? Evidence from Ca Isotopes
  • 批准号:
    0951487
  • 项目类别:
    Standard Grant
  • 资助金额:
    $5.27万
  • 财政年份:
    2009
  • 负责人:
    Stein Jacobsen
  • 依托单位:
Technician Support: EPS TIMS Facility at Harvard (Phase II)
  • 批准号:
    0093652
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $8.06万
  • 财政年份:
    2001
  • 负责人:
    Stein Jacobsen
  • 依托单位:
海外基金