Figure F100. MgO, Al2O3, and H2O vs. SiO2 in gabbros from Hole 1270B. Site 1268 gabbros and average mineral compositions from Oman are shown for comparison (Lachize, 1993). The Hole 1270B gabbros are somewhat depleted in SiO2 when compared to average mineral compositions from Oman and to the Site 1268 gabbros, probably because Hole 1270B gabbros are richer in Fe-Ti oxides than Oman and Site 1268 gabbros. Plag = plagioclase, opx = orthopyroxene.

Figure F100. MgO, Al₂O₃, and H₂O vs. SiO₂ in gabbros from Hole 1270B. Site 1268 gabbros and average mineral compositions from Oman are shown for comparison (Lachize, 1993). The Hole 1270B gabbros are somewhat depleted in SiO₂ when compared to average mineral compositions from Oman and to the Site 1268 gabbros, probably because Hole 1270B gabbros are richer in Fe-Ti oxides than Oman and Site 1268 gabbros. Plag = plagioclase, opx = orthopyroxene.