Metamorphic and Isotopic Studies of Mylonites

在山带的演化过程中，主要的构造作用幕往往被糜棱岩系列岩石的发育所记录。矿物和整个岩石尺度的变形和相关的化学变化与辐射年龄的关系是这项研究的目的。将调查镁铁质岩石糜棱岩化过程中形成的矿物和同位素平衡域的大小，以及锆石和钛铁矿的响应。结果将导致应用领域平衡的概念来测量阿巴拉契亚山脉南部选定断层的绝对年龄，以及它们对阿巴拉契亚山脉带的增殖史的地球动力学意义。

In the evolution of mountain belts, major episodes of tectonism are often recorded by the development of rocks of the mylonite series. The relationship of deformation and associated chemical changes, at the mineral and whole rock scales, to radiometric ages is the objective of this research. The size of mineral and isotopic equilibrium domains developed during mylonitization of mafic rocks and the response of zircon and titanite will be investigated. Results will lead to applying concepts of domainal equilibrium on measuring absolute ages of selected faults in the Southern Appalachians and their geodynamic implications for the accretionary history of the Appalachian Mountain belt.