Felsic veins within UHP eclogite at xitieshan in North Qaidam, NW China: Partial melting during exhumation

► Felsic veins occur within UHP eclogite in North Qaidam and show tonalitic composition. ► Zircon U-Pb dating yields an age of 428 ± 2 Ma for felsic veining and 458 ± 2 Ma for eclogitization. ► The felsic veins are derived from partial melting of the UHP eclogite during exhumation.