Introduction
Supplementary data files include an extended method, a series of Tera-Wasserburg Concordia plots showing normalized standards (supplementary figure 1), a table detailing the instrument parameters used during LAICPMS analysis (supplementary table 1). Additional files include an excel spreadsheet with all normalized U-Pb data used in this paper and corresponding trace element concentrations for elementally mapped samples (8b and 12a)
Note: analyses have been culled from U-Pb data based on the following: association with cracks/contaminated material, low Pb counts and inconsistent time resolved Pb/Pb or U/Pb signals