The origin of enriched mantle beneath North China block: Evidence from young carbonatites

► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr-Nd-Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.