Presidential Young Investigator: Metamorphic Petrology ,

地质构造学研究构造过程之间关系的学科 变质作用是地球上最活跃和最令人兴奋的领域之一 对地壳的最新研究 由于新 技术，PI对其发展做出了贡献，现在 可以跟踪的压力（P）-温度（T）的路径 特定的矿物组合，因为它们受到 埋藏、加热、压缩、脱水、断层作用、隆升， 侵蚀 地质年代学技术在地质年代学研究中的应用 同样的岩石使得推断P-T时间路径成为可能， 建立精确的地球物理模型的可能性 地壳运动 PI将对地质构造进行研究 和变质作用，但同时 将研究流体不渗透性在高温下的可能作用， 压力、低温变质作用。 实地研究将在三个方面进行：（1） 奥地利阿尔卑斯山东部;（2）美国爱达荷州中西部;（3） 位于爱琴海的锡夫诺斯岛 实验室工作将 主要是在哈佛进行的， 分析仪将用于确定矿物的P-T路径 组装和加热/冷冻显微镜载物台将 用于估计流体不渗透性的条件。 地质年代学工作将是40 Ar/39 Ar类型的， 在未指定身份的实验室进行。

The study of the relationships between tectonic processes and metamorphism is one of the most active and exciting areas of current research on the Earth's crust. Thanks to new techniques, to whose development the PI contributed, it is now possible to track the pressure (P) - temperature (T) path of specific assemblages of minerals as they are subjected to burial, heating, compression, dehydration, faulting, uplift, and erosion. The application of geochronologic techniques to the same rocks makes it possible to deduce P-T time paths and opens the possibility of building accurate geophysical models of crustal processes. The PI will conduct research on tectonics and metamorphism during the duration of the PYIA but, also, will study the possible role of fluid immiscibility during high pressure, low temperature metamorphism. Field research will be conducted in three areas: (1) the eastern Alps of Austria; (2) west-central Idaho, USA; and (3) the island of Sifnos in the Aegean Sea. Laboratory work will be carried out primarily at Harvard where an electron microprobe analyzer will be used to determine P-T paths from mineral assemblages and a heating/freezing microscope stage will be used to estimate conditions of fluid immiscibility. Geochronological work will be of the 40 Ar/39 Ar-type and will be performed in a laboratory whose identity is not specified.