Figure F11. A. Li vs. SiO2/MgO for serpentinite muds and metamorphic clasts from Legs 125 and 195. Lithium is elevated in most of the metamorphic clasts in respect to the muds. The Li abundances of Leg 195 and Leg 125 (Benton, 1997) serpentinite muds are similar. Lithium shows positive correlation with SiO2/MgO only in the metabasic samples with MORB-like protoliths. Depleted mantle Li = ~1.6 ppm (Ryan and Langmuir, 1987). The shaded field is for serpentinized peridotites (Savov, 2004). B. B vs. SiO2/MgO for serpentinite muds and metamorphic clasts from Legs 125 and 195. The high B content of all of the metamorphic schists remains independent of their protolith (discriminated by SiO2/MgO ratio as in Fig. F10) and resemble the B contents of serpentinite muds. The B abundances of serpentinite muds from ODP Legs 195 (this study) and 125 (Benton, 1997) are similar.

Figure F11. A. Li vs. SiO₂/MgO for serpentinite muds and metamorphic clasts from Legs 125 and 195. Lithium is elevated in most of the metamorphic clasts in respect to the muds. The Li abundances of Leg 195 and Leg 125 (Benton, 1997) serpentinite muds are similar. Lithium shows positive correlation with SiO₂/MgO only in the metabasic samples with MORB-like protoliths. Depleted mantle Li = ~1.6 ppm (Ryan and Langmuir, 1987). The shaded field is for serpentinized peridotites (Savov, 2004). B. B vs. SiO₂/MgO for serpentinite muds and metamorphic clasts from Legs 125 and 195. The high B content of all of the metamorphic schists remains independent of their protolith (discriminated by SiO₂/MgO ratio as in Fig. F10) and resemble the B contents of serpentinite muds. The B abundances of serpentinite muds from ODP Legs 195 (this study) and 125 (Benton, 1997) are similar.