Data for<i> Calcium isotopic compositions of eclogite melts and their reaction with the lithospheric mantle</i>

This dataset includes (1) Chmical and isotopic compositions of the potassic basalts from northeast China in this study (Table S1) and standards (Tables S2-3); (2) Melting of MORB-like eclogite and peridotite with evolving modal composition in melting residue (Tables S4-5); and (3) Modelling the reaction between initial melts and lithospheric mantle (Table S6).