Figure 6
From: Diversity in early crustal evolution: 4100 Ma zircons in the Cathaysia Block of southern China
A compilation showing the distribution of 207Pb/206Pb age versus δ18O for the published analyses on >3300 Ma zircons and the magmatic areas of the two grains of this study.
The value for mantle-like zircon (5.3 ± 0.6‰, 2SD) is from the ref. 19. This plot is made on a compilation (Table S4) of 339 magmatic zircons. Only con% between 80% and 120% are included when multiple isotopic ages were provided. The analyses with δ18O errors (2SD) bigger than 1.8 were rejected. Detailed rules in data filtration can be seen in the notes of Supplementary Table S3.
