Melt-rock interaction in the lower crust based on silicate melt inclusions in mafic garnet granulite xenoliths, Bakony–Balaton Highland

Major and trace element composition of silicate melt inclusions (SMI) their rock-forming minerals were studied in mafic garnet granulite xenoliths from the Bakony–Balaton Highland Volcanic Field (Western-Hungary). Primary SMIs occur clinopyroxene plagioclase plagioclase-rich domains granulites ilmenite vicinity these wall rock. Based on major elements, we demonstrated that have no connection with xenolith-hosting alkaline basalt as they rhyodacitic a distinct REE pattern, negative Sr anomaly, HFSE depletion. The characteristics suggest hosted are closest representation original percolated lower crust. In contrast, products interaction between silicic rock granulite. A further product this is clinopyroxene–ilmenite±plagioclase symplectite. Textural observations mass ­balance calculations reveal reaction titanite led to formation assemblages. We propose tectonic mélange metapelites (MOR-related) metabasalts partially melted at 0.3–0.5 GPa form dacitic–rhyodacitic leaving behind garnet-free, plagioclase+clinopyroxene+orthopyroxene+ilmenite residuum. (both elements) similar those middle Miocene calc-alkaline magmas, widely known northern Pannonian Basin (Börzsöny Visegrád Mts., Cserhát Mátra volcanic areas Central Slovakian VF), but probably result later, local process. study also highlights how crustal contamination changes magma compositions during asthenospheric ascent.