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Collaborative Research: Origins of the Ontong Java Plateau,SW Pacific: A Geochemical and Stratigraphic Study of Exposed Plateau Basement in the Solomon Islands

Collaborative Research: Origins of the Ontong Java Plateau,SW Pacific: A Geochemical and Stratigraphic Study of Exposed Plateau Basement in the Solomon Islands
合作研究:西南太平洋翁通爪哇高原的起源:所罗门群岛裸露高原基底的地球化学和地层学研究
批准号:
9302472
负责人:
Robert Duncan
金额:
$3.5万
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:
1993-03-01 至 1995-08-31

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中文摘要
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英文摘要
The Ontong Java Plateau is the largest oceanic plateau in the world. The P.I.s propose to carry out systematic field sampling and a detailed petrographic, chemical, Nd-Sr-Pb isotopic, and 40Ar-39Ar investigation of a 2000 m-thick tract of plateau basement exposed on the island of Malaita in the Solomon Islands. To complement this work, the P.I.s will also study a suite of lavas (collected previously by the Solomon Islands Geological Survey) from other basement exposures along a 300-km-long zone in southern Malaita and the neighboring islands of Small Malaita and Santa Isabel. The results will extend knowledge gained from drilling by providing a deep, stratigraphically controlled record of mantle source, age, and petrogenesis, and a wide spatial coverage of basement age and compositional variations over a much broader region.
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