Geochronology and geochemistry of Neoproterozoic Hamamid metavolcanics hosting largest volcanogenic massive sulfide deposits in Eastern Desert of Egypt: Implications for petrogenesis and tectonic evolution

•Felsic volcanic rocks from the Younger Hamamid group were emplaced at ~695 Ma.•Partial melting of a contaminated mantle source aided pre-Neoproterozoic zircon recycling.•Younger Hamamid lavas typically developed in a back-arc basin environment under low pressure and low oxygen fugacity conditions.