Figure 9. Chondrite-normalized trace element distribution in the products of the partial (a, c) and fractional (b, d) melting of normal primitive mantle having a composition of garnet peridotite Ol0.60 + Opx0.20 + Cpx0.08 + Grt0.12. The thick line is the average composition of primary magmas in the Kola alkaline province, the shaded line denotes the compositions of the alkaline-ultramafic and phonolite series. The thin lines are the model compositions of the melts and complementary restites (broken lines) for the 0.1-10% degrees of melting. The dotted lines show the composition of depleted mantle after McKenzie and O'Nions [1991]. The normalizing factors used were after Evensen et al. [1978] for these and after Hofmann [1988] for the other elements.