Geochemistry of Volcanic Rocks from the Balleny Islands

9317458 Berg该奖项支持对巴伦尼群岛火山的岩石学、地球化学和地质年代学研究，巴伦尼群岛是南极板块上两个海洋岛屿玄武岩火山活动的地点之一。薄片的岩石学分析将确定模态矿物，这将产生关于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元素和微量元素分析，Pb、Sr和Nd系统的同位素分析，以及K-Ar和40Ar/39Ar的地质年代数据。这些数据将与其他海洋岛屿玄武岩数据一起用于限制岩浆产生时期地幔化学储层的组成。当将这些数据添加到其他数据库中时，这些数据将有助于更好地了解南半球地幔储层的地理范围和这些储层的相关性。＊＊＊

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. ***