“…It should be noted that the compositions of metasomatized rocks formed from a single metasomatizing melt vary with the evolution of the melt. Consequently, the veins will define a trend of shallow slope, and the mixing curves between In particular, the studies carried out on mantle lherzolites and mantle-derived peridotites (Schultz et al, 2004;Lucassen et al, 2005Lucassen et al, , 2007Comin-Chiaramonti et al, 1991, 1997Antonini et al, 2005) have highlighted the heterogeneity of the lithospheric mantle in both regions. The differences among the wellknown HIMU, EMI and EMII mantle end-members (Zindler and Hart, 1986;Hannan and Graham, 1996;Hofmann, 1997;Jackson and Dasgupta, 2008;Niu et al, 2012) are linked to differences in their radioactive parent/daughter ratios (Rb/Sr, Sm/Nd, Lu/Hf, U/Pb and Th/Pb) with respect to their "pristine OIB" source.…”