Figure 3

(a) Na2O + K2O versus SiO2 diagram and (b) FeOT/MgO versus SiO2 diagram for the Early Cretaceous mafic rocks in the western QHB.
(a) Na2O + K2O versus SiO2 diagram and (b) FeOT/MgO versus SiO2 diagram for the Early Cretaceous mafic rocks in the western QHB.