Detrital zircon geochronology

Detrital zircons are extracted from bulk sample using heavy liquid and Frantz magnetic separation. U-Pb ages are collected from individual zircon grains, using laser ablation inductively coupled plasma (LA-ICPMS) . In order to correct for mass and instrumental bias, analyses are corrected against Plesovice zircon standard (Sláma et al., 2008). Raw data are reduced using Iolite (Patton et al., 2010) software. All zircon analyses are displayed on Concordia diagrams. Accepted data from each sample are then displayed on histograms and probability density plots (e.g. Sircombe, 2004).