Figure F14. A–F. Whole-rock variation diagrams showing Hole 1105A gabbroic data classified according to rock types and exhibiting the effects on whole-rock chemistry dependent on increasing oxide content (e.g., [A, B] decreasing SiO2, [C, D] increasing Ti, [E] correlation between Mg# and oxide abundances once oxides crystallize, and [F] between Fe and Ti). Atlantis II basaltic data are also plotted, showing large differences in bulk composition when compared to plutonic samples both at primitive and evolved stages. In D, oxides depress SiO2 and granophyric veins elevate SiO2. Note that samples with Mg#s < 71–73 generally contain magmatic oxides, but rocks above this limit lack oxides.

Figure F14. A–F. Whole-rock variation diagrams showing Hole 1105A gabbroic data classified according to rock types and exhibiting the effects on whole-rock chemistry dependent on increasing oxide content (e.g., [A, B] decreasing SiO₂, [C, D] increasing Ti, [E] correlation between Mg# and oxide abundances once oxides crystallize, and [F] between Fe and Ti). Atlantis II basaltic data are also plotted, showing large differences in bulk composition when compared to plutonic samples both at primitive and evolved stages. In D, oxides depress SiO₂and granophyric veins elevate SiO₂. Note that samples with Mg#s < 71–73 generally contain magmatic oxides, but rocks above this limit lack oxides.