Geochemistry, zircon UPb geochronology and LuHf isotopic composition of eclogites and their host gneisses in the Dulan area, North Qaidam UHP terrane: New evidence for deep continental subduction

► Eclogite protolith could be derived from Neoproterozoic depleted mantle. ► The orthogneiss protolith crystallized in the early-Neoproterozoic. ► Eclogites and gneisses experienced Late Ordovician deep continental subduction.