U-Pb (ID-TIMS) Geochronological Studies of High-Uranium Metamict Zircons: New Opportunities of Familiar Approaches
A. A. Ivanova, Е. Б. Сальникова, А. Б. Котов, Yu. V. Plotkina, Е. В. Толмачева, Л. Ф. Сырицо, Vladimir N. Bocharov
Abstract
Abstract The possibility of the application of high-uranium self-irradiation-damaged metamict zircon for U-Pb geochronological studies (ID-TIMS) after preliminary high-temperature annealing and acid treatment was demonstrated using zircon from the Li–F granites of the Turga massif (Eastern Transbaikalia). Optimal conditions of high-temperature annealing and acid treatment of zircon with high self-irradiation α-dose can be selected to remove completely a metamict phase and preserve sufficient quantities of the mineral for U-Pb (ID-TIMS) studies.
Topics & Concepts
MetamictizationZirconMassifUraniumGeologyGeochemistryGeochronologyAnnealing (glass)Uranium oreMineralogyMaterials scienceMetallurgyGeological and Geochemical AnalysisNuclear materials and radiation effectsearthquake and tectonic studies