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

这一奖项是为了支持一个开发数据库的项目，该数据库可以更好地了解南极洲横贯南极山脉高品位基底变质岩的区域变质、变形和年龄关系。待检测的岩石来自横贯南极山脉中部的Nimrod群和维多利亚地北部的Lanterman变质杂岩。改善它们的岩石成因、年龄和构造演化的文献对于彻底了解古南极洲克拉通是如何演化的以及冈瓦纳超大陆是如何形成的非常重要。这项研究将包括详细的野外地质填图和采样、构造、微观构造、运动学和结构分析、变质岩石学和定量地球热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.