Accessory Mineral Microstructure and Implications for Geochronology

副矿物U-Pb年代学被广泛应用于岩浆、变质和沉积作用的年代学研究。然而，我们目前对这些重要矿物的同位素流动性的认识不能很容易地解释U-Pb定年的一些共同特征。利用显微构造定量分析的新进展，结合高空间分辨率地质年代学，我们将限制副矿物变形及其对放射性年龄的影响之间的关系。我们的研究结果将导致更好地理解副矿物的地球化学改性，并可能导致地质年代学的新应用的发展和改进岩石变形的定年。

U-Pb geochronology of accessory minerals is widely used to constrain the timing of igneous, metamorphic and sedimentary processes. However, our current knowledge of isotope mobility in these important minerals cannot readily explain some common features of U-Pb dating. Using new developments in quantitative microstructural analysis integrated with high spatial resolution geochronology we will constrain the relationship between accessory minerals deformation and its effect on radiometric ages. Our results will lead to a better understanding of geochemical modification of accessory minerals and may lead to the development of new applications of geochronology and improve the dating of rock deformation.