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