Figure F63. Site 1139 lavas and all other samples drilled from Kerguelen Plateau basement. Site 1139 lavas generally have lower MgO and the trachybasalts have higher TiO₂, Nb, and Zr than previously observed in plateau lavas. Large X symbol = trachybasalt and trachyandesite. Small x symbol = rhystite, trachyte, and trachyandesite. For data sources see Figure F60.