Figure F31. A. Primitive mantle-normalized (Sun and McDonough, 1989), incompatible trace element diagrams for Site 1140 basalts. B. Range for basalt compositions from Kerguelen Plateau Sites 749 and 750. Units 1, 5, and 6 from Site 1140 have concentrations intermediate between those for Sites 749 and 750 for the right part of the diagram (Nb-Y), but they are distinguished by low Rb and K. Except for Rb and K, lavas from Units 2 and 3 have much higher abundances of trace elements, by a factor of 5, than other Site 1140 basalts. Data sources are the same as in Figure F27.