Exhumation of Ultrahigh-Pressure Rocks in the Dabie Mountains, Central China

9417958刘该项目将研究最近在中国大别山发现的超高压岩石的侵位机制。这些榴辉岩含有表明埋藏极深的矿物，它们被抬升到地表的过程尚不清楚。该项目将试图确定沿着限制榴辉岩的主要断层的应变历史和变形速率。将利用变形带内部和两侧岩石的温度压力、变质相关系和地质年代学来评估变形过程中的温度和压力以及垂直位移的大小和时间。该项目将是对这些超高压岩石构造史的首次研究。这些结果将提供对碰撞造山带最深层次的物理过程的理解，并将阐明深层次和浅层次与构造作用之间的联系。

9417958 Liou This project will study the emplacement mechanisms of ultrahigh-pressure rocks that have been recently discovered in the Dabie Mountains in China. These eclogitic rocks contain minerals that indicate extremely deep burial, and the processes by which they were uplifted to the surface are unknown. The project will attempt to identify the strain history and deformation rates along major faults that bound the eclogitic rocks. Thermobarometry, metamorphic phase relations, and geochronology of the rocks within and on either side of the deformation zones will be used to assess the temperatures and pressures during deformation and the magnitude and timing of vertical displacement. This project will be the first study of the tectonic history of these ultrahigh-pressure rocks. The results will provide an understanding of the physical processes operative in the deepest levels of collisional orogens, and will illuminate the linkage among deep and shallow levels to tectonism.