Figure AF1. Variation of Mg# in the upper 100 m of Hole 735B. Open squares = oxide gabbros (>1% TiO2), half-solid squares = tonalite, trondhjemite, and diorite (>54% SiO2 and up to 70% SiO2), solid blue circles = differentiated gabbros, including disseminated oxide gabbros (<54% SiO2 and Mg# [= 100 x Mg/(Mg + Fe2+)] < 72.5), solid red circles = olivine gabbros (same as previous but with Mg# > 72.5 up to MgO = 12%), solid black circles = troctolitic gabbros plus troctolites (>12% MgO), solid triangles = olivine pyroxenites (like troctolites but with normative Di > 40%). The placements of boundaries between olivine gabbro sequences are to the left; those of lithologic units and subunits are to the right. Letters indicate strip samples of Hart et al. (1999). Fields bound data for lithologic intervals as indicated. Under lithologic units, GN = gabbronorite; OGN = olivine gabbronorite; OG = olivine gabbro.

Figure AF1. Variation of Mg# in the upper 100 m of Hole 735B. Open squares = oxide gabbros (>1% TiO₂), half-solid squares = tonalite, trondhjemite, and diorite (>54% SiO₂ and up to 70% SiO₂), solid blue circles = differentiated gabbros, including disseminated oxide gabbros (<54% SiO₂ and Mg# [= 100 x Mg/(Mg + Fe²⁺)] < 72.5), solid red circles = olivine gabbros (same as previous but with Mg# > 72.5 up to MgO = 12%), solid black circles = troctolitic gabbros plus troctolites (>12% MgO), solid triangles = olivine pyroxenites (like troctolites but with normative Di > 40%). The placements of boundaries between olivine gabbro sequences are to the left; those of lithologic units and subunits are to the right. Letters indicate strip samples of Hart et al. (1999). Fields bound data for lithologic intervals as indicated. Under lithologic units, GN = gabbronorite; OGN = olivine gabbronorite; OG = olivine gabbro.