Origin of Potassic and Ultrapotassic Basalts of NE China

东北亚是世界上最大的第四纪钾质火山区之一，也是最不为人所知的地区之一。这些岩石的钾含量最高，最容易接近，也是历史上唯一的喷发地点是在黑龙江西北部和邻近的中国内蒙古。PI已经开始对这些岩石进行主要的岩石学、地球化学和同位素研究。一名中国研究生目前正在圣克鲁斯研究它们。该奖项将为学生提供临时支持，直到获得整个项目的长期资金。在此期间，他将通过XRF获得主要和微量元素，并完成已收集样品的岩石学特征；完成代表性样品的U-Th不平衡研究；并获得一小部分样品的稀土分析。

One of the largest areas of Quaternary potassic volcanics in the world, in NE Asia, is also one of the least well-known. The most potassic, most accessible, and the only sites of historic eruptions of these rocks are in northwestern Heilogjiang and adjacent Inner Mongolia, China. The PI has begun a major petrologic, geochemical and isotopic study of these rocks. A Chinese graduate student is currently working on them at Santa Cruz. This award will provide temporary support for the student until longer-term funding for the project as a whole can be obtained. During this time he will obtain major and trace elements by XRF and complete petrographic characteriaation of samples collected already; complete U-Th disequilibria studies of representative samples; and obtain rare earth analyses of a subset of samples.