Antarctic Rift and Hot Spot Volcanism

该奖项支持了一项关于诺埃根火山作用的研究， 南极洲 这项工作解决了两个问题：1）性质 形成南极洲西部的潜在地质构造力量 包括南极半岛和泛南极洲 山，和2）亚极地地幔的性质， 全球地幔不均匀性和地幔动力学 对流 调查的重点是地球化学 （主要和微量元素;锶、钕、铅 同位素）的选定玄武岩从Balleny，斯科特和彼得 I群岛、哈利特和墨尔本火山省、 琼斯山脉和深海钻探地点274、323和 690 C. 这项工作将确定地球化学特征 从不同的火山区提取玄武岩， 确定区域关系和评估热点 与这些省份的裂谷情景进行对比。

This award supports a study of Noegene volcanism in Antarctica. The work addresses two issues: 1) the nature of the underlying tectonic forces shaping west Antarctica, including the Antarctic Peninsula and the Transantarctic Mountains, and 2) the nature of subpolar mantle in relation to global mantle heterogeneities, and the dynamics of mantle convection. The investigation focuses on the geochemistry (major and trace elements; Strontium, Neodymium, Lead isotopes) of selected basalts from Balleny, Scott and Peter I Islands, the Hallett and Melbourne Volcanic Provinces, the Jones Mountains, and Deep Sea Drilling Sites 274, 323 and 690C. The work will determine the geochemical signatures for basalts from the various volcanic provinces in order to ascertain regional relationships and to evaluate hot spot versus rifting scenarios for these provinces.