Accessory Mineral Microstructure and Implications for Geochronology

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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.