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Re-Os Systematics in the Earth's Mantle: Evidence from Mantle-Derived Basalts and Ultramafic Nodules

Re-Os Systematics in the Earth's Mantle: Evidence from Mantle-Derived Basalts and Ultramafic Nodules
地幔中的铼铼系统学:来自地幔玄武岩和超镁铁结核的证据
批准号:
9220004
负责人:
Alan Zindler
金额:
$4.0万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1993
资助国家:
美国
项目状态:
已结题
起止时间:
1993-02-01 至 1994-01-31

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中文摘要
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英文摘要
The principal goals of this research are to investigate Re- Os systematics in the upper mantle and the nature of processes that produce Os isotopic variations in the mantle. To achieve these goals, the P.I.s will implement a two-phase research program. First, they will expand the characterization of Os isotope ratios in OIBs by analyzing selected basalts from Iceland, Hawaii, St. Helena and the Canary Islands. Second, they will investigate the extent to which assimilation of altered crust may be important in determining the Os isotopic composition of OIBs by comparing Re-Os systematics in differentiated and undifferentiated basalts, and by direct characterization of altered submarine basalt sections.
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