Extended Data Fig. 3: Selected trace element contents versus SiO2 values for Late Cretaceous-Early Cenozoic magmatic rocks from the Gangdese arc.
From: India–Eurasia convergence speed-up by passive-margin sediment subduction
Data sources are the same as those in Extended Data Fig. 1. The rock SiO2 values for the Gangdese arc show vertical or lateral covariation patterns with trace element concentrations within individual locations. This strongly indicates that such variations do not result from fractional crystallization (AFC) of a homogeneous primitive arc melt but reflect the compositional heterogeneity of primitive arc melts.
