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: 9302471
• 负责人: Clive Neal
• 金额: $ 5.3万
• 依托单位: University of Notre Dame
• 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
• 起止时间: 1993-04-01 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9302471&HistoricalAwards=false
• 关键词: Collaborative; Research; Origins; Ontong; Java

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.

宽爪哇高原是世界上最大的海洋高原。 P.I.S建议对在所罗门群岛的Malaita岛上暴露于2000 m厚的高原地下室，对2000 m厚的高原地下室进行了详细的岩石学，化学，ND-SR-PB同位素以及40AR-39AR研究。 为了补充这项工作，P.I.S还将研究一套熔岩（以前由所罗门群岛地质调查局收集），该地下室的其他地下室暴露在南部马拉塔塔（Malaita）南部300公里长的区域以及邻近的小马洛塔（Malaita）和圣伊萨贝尔（Santa Isabel）的邻近岛屿上。 结果将通过提供地下室来源，年龄和石化的深度，地层控制记录，以及在更广泛的区域的地下室年龄和组成变化的广泛空间覆盖，从而扩展了从钻井中获得的知识。