Comparative Petrologic, Structural and Geochrononmetric Investigation of High-grade Metamorphic Rocks in the Transantarctic Mountains

该奖项是对一个开发数据库的项目的支持，该数据库可以更好地了解南极横贯北极山脉高级基底变质岩的区域变质、变形和年龄关系。被检查的岩石来自横贯北极山脉中部的Nimrod群和维多利亚陆地北部的Lanterman变质杂岩。对它们的岩石成因、年代和构造演化的更好的记录对于彻底理解南极克拉通是如何演化和超大陆冈瓦那是如何形成的很重要。这项研究将涉及详细的野外地质填图和取样、构造、微构造、运动学和组构分析、变质岩石学和定量地质温压测量以及铀-铅地质年代学。

This award is for support for a project to develop a data base from which regional metamorphic, deformation, and age relations of high- grade basement metamorphic rocks in the Transantarctic Mountains of Antarctica can be better understood. The rocks to be examined come from the Nimrod Group in the central Transantarctic Mountains and the Lanterman Metamorphic Complex in northern Victoria Land. Improved documentation of their petrogenesis, age, and tectonic evolution are important for a thorough understanding of how the paelo-Antarctc craton evolved and how the supercontinent Gondwana formed. This study will involve detailed field geologic mapping and sampling, structural, microstructural, kinematic and fabric analysis, metamorphic petrology and quantitative geothermobaro- metry, and Uranium-Lead geochronometry.