Geochemical characteristics of basaltic rocks from the Nain ophiolite (Central Iran); constraints on mantle wedge source evolution in an oceanic back arc basin and a geodynamical model

► We studied geochemistry of mafic rocks from the Nain ophiolites in Iran. ► The rocks show characters of island arc tholeiite/mid-ocean ridge basalt magma types. ► They are originated in an oceanic back arc basin, and subsequently have been enriched by slab-derived fluids. ► The arc volcanic-like magmas were produced at the early stage. ► The MORB-like basalts were generated at the later stage of evolution of the Nain ophiolitic complex.