Extended Data Fig. 3: Sc/Yb vs. U/Nb for zircons.
From: Contemporaneous mobile- and stagnant-lid tectonics on the Hadean Earth
Plots of Sc/Yb vs. U/Nb for detrital zircons from Jack Hills metasediments (this study) and the Barberton Green Sandstone Bed13. a&b show all data, c&d older than 3.8 Ga, and e&f younger than 3.8 Ga. Discriminants for Continental Arcs/ Subduction (CAS) vs. Mantle from Grimes et al.14. Note that a significant proportion of Hadean zircons have mantle-like U/Nb and CAS-like Sc/Yb (lower-right quadrant) due to hydrous melting conditions and different mineralogy, see text. Such mantle-CAS zircons are less common after 3.8 Ga.
