Origin of Late Permian Emeishan basaltic rocks from the Panxi region (SW China): Implications for the Ti-classification and spatial–compositional distribution of the Emeishan flood basalts

Basalts and a mafic dyke collected from the city of Panzhihua show characteristics of high-Ti and low-Ti Emeishan basalts respectively. The dyke yielded a SHRIMP zircon U–Pb mean age of 261 ± 5 Ma making it contemporaneous with the eruption of Emeishan basalts. The basalts have ISr ranging from 0.7059 to 0.7062 with εNd(T) ranging from −1.1 to + 0.7 whereas the dyke has ISr ranging from 0.7056 to 0.7064 with εNd(T) ranging from + 0.3 to + 0.5....