Geochemistry of Volcanic Rocks from the Balleny Islands

巴勒尼群岛火山岩的地球化学

• 批准号: 9317458
• 负责人: Jonathan Berg
• 金额: $ 7万
• 依托单位: Northern Illinois University
• 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
• 起止时间: 1994-02-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9317458&HistoricalAwards=false
• 关键词: Geochemistry; Volcanic; Rocks; Balleny; Islands

9317458 Berg This award supports a petrological, geochemical, and geochronological study of volcanics from the Balleny Islands, one of two localities of ocean island basaltic volcanism on the Antarctic plate. Petrographic analyses of thin sections will determine modal minerals, which will yield information about depth of magma origin, and will aid in determining the extent of alteration. Analytical work will include major and trace element analyses, isotopic analyses for the Pb, Sr, and Nd systems, as well as K-Ar and 40Ar/39Ar geochronological data. These data will be used, along with other ocean island basalt data, to constrain the composition of mantle chemical reservoirs during the time of production of the magmas. When added to other databases, these data will contribute to a better understanding of the geographic extent of mantle reservoirs and the correlation of these reservoirs in the southern hemisphere. ***

9317458贝格该奖项支持对巴利尼群岛火山岩进行岩石学、地球化学和年代学研究，巴利尼群岛是南极板块上两个大洋岛屿玄武岩火山作用地点之一。 薄片的岩相分析将确定模式矿物，这将产生有关岩浆起源深度的信息，并将有助于确定蚀变的程度。 分析工作将包括主要和微量元素分析，Pb、Sr和Nd系统的同位素分析，以及K-Ar和40 Ar/39 Ar年代学数据。 这些数据将被用来，沿着与其他洋岛玄武岩数据，以限制地幔化学储层的组成，在生产的岩浆。 这些数据加入其他数据库后，将有助于更好地了解地幔储层的地理范围以及南半球这些储层的相互关系。 ***