Figure F6. Abundance of TiO2 vs. MgO for basement igneous rocks recovered during Leg 183. Data sources are Neal et al. (2002) for Sites 1136, 1138, 1141, and 1142; Ingle et al. (2002a, 2002b) for Site 1137; Kieffer et al. (2002) for Site 1139; and Weis and Frey (2002) for Site 1140. Important features are (a) the wide range in MgO content with many of the clasts in the conglomerate at Site 1137 and several samples at Site 1139 containing <1 wt% MgO and (b) Site 1140 lavas define three subparallel trends, which reflect units containing varying proportions of MORB- and plume-related components.

Figure F6. Abundance of TiO₂ vs. MgO for basement igneous rocks recovered during Leg 183. Data sources are Neal et al. (2002) for Sites 1136, 1138, 1141, and 1142; Ingle et al. (2002a, 2002b) for Site 1137; Kieffer et al. (2002) for Site 1139; and Weis and Frey (2002) for Site 1140. Important features are (a) the wide range in MgO content with many of the clasts in the conglomerate at Site 1137 and several samples at Site 1139 containing <1 wt% MgO and (b) Site 1140 lavas define three subparallel trends, which reflect units containing varying proportions of MORB- and plume-related components.