Figure F54. FeO*/MgO vs. TiO₂ plot for basalts from Site 1179D. Reference data sources from Pacific Ocean are Mariana Basin, Floyd and Castillo (1992); Ontong Java Plateau, Mahoney et al. (1993); East Pacific Rise (EPR) 10°-12°N, Thompson et al. (1989); EPR Leg 54 (open diamonds), Humphris et al. (1980); EPR Leg 54 (open squares) and Galapagos Rift, Srivastava et al. (1980); northwestern Pacific DSDP Leg 32, Marshall (1975); northern Pacific DSDP Leg 86, Fountain et al. (1985). All data having H₂O⁺ (or loss on ignition) >5 wt% are omitted.