Research project funded by National Science Centre 2017/27/B/ST10/00813
(29.06.2018 – 28.06.2023)
“Mineral transformations and REE, Th, U, Pb distribution during alteration processes of monazite, xenotime and allanite in nano- and microscale, and analytical improvements of electron probe microanalysis and Raman micro-spectroscopy for these phases”
Primary Investigator: Bartosz Budzyń
The project aims to determine nano- and microscale mechanisms of monazite, xenotime and allanite alteration, and their impact on isotopic U-Pb record, as well as to improve selected microanalytical methods. The nanoscale observations provided crucial insights into reconstructions of fluid-mediated coupled dissolution-reprecipitation process, which is the main mechanism of alteration of monazite, xenotime and allanite. The isotopic LA-ICPMS analyses of experimentally altered monazite and xenotime demonstrate variable degree of U-(Th-)-Pb disturbance controlled by temperature conditions, fluid composition and/or annealing. New LA-ICPMS, TEM and Raman data provide new insights with significant implications for applications of monazite U-Th-Pb dating in tectonic reconstructions.
Publications