Figure F67. TiO2 vs. Mg# showing the similarity between the major element compositions of basalt units from Hole 1183A and those of Units C-G at Site 807 (Mahoney et al., 1993) and the Kwaimbaita Formation on Malaita (Tejada et al., in press). Mg# is calculated assuming that 12% of the iron is Fe3+, which is equivalent to Fe2O3/(Fe2O3 + FeO) = 0.13 or Fe2O3/FeO = 0.15.

Figure F67. TiO₂ vs. Mg# showing the similarity between the major element compositions of basalt units from Hole 1183A and those of Units C-G at Site 807 (Mahoney et al., 1993) and the Kwaimbaita Formation on Malaita (Tejada et al., in press). Mg# is calculated assuming that 12% of the iron is Fe³⁺, which is equivalent to Fe₂O₃/(Fe₂O₃ + FeO) = 0.13 or Fe₂O₃/FeO = 0.15.