Figure F40. Mantle peridotites from Conical, Torishima, and South Chamorro Seamounts plotted in (A)CaO vs. Al2O3 and (B) CaO vs. 100 x Mg2+/(Mg2+ + Fe2+) diagrams after Ishiwatari (1985), showing different degrees of melting. Fields for Conical and Torishima Seamount peridotites are from Ishii et al. (1992), Parkinson and Pearce (1998), and I.P. Savov and W.B.F. Ryan (unpubl. data).

Figure F40. Mantle peridotites from Conical, Torishima, and South Chamorro Seamounts plotted in (A)CaO vs. Al₂O₃ and (B) CaO vs. 100 x Mg²⁺/(Mg²⁺ + Fe²⁺) diagrams after Ishiwatari (1985), showing different degrees of melting. Fields for Conical and Torishima Seamount peridotites are from Ishii et al. (1992), Parkinson and Pearce (1998), and I.P. Savov and W.B.F. Ryan (unpubl. data).