Figure F56. Trace element contents of basalts from Site 1137 normalized to primitive mantle values of Sun and McDonough (1989). All Site 1137 basalts are enriched in incompatible elements. The wide range of Rb and K shows the mobility of these elements during postmagmatic alteration. A. All basalt samples from Units 1-4 from Site 1137. B. All basalt samples from Units 7, 8, and 10 from Site 1137. C. Least-altered samples from Units 1-4 from Site 1137. D. Least-altered samples from Units 7, 8, and 10 from Site 1137. E. Evolved volcanic and volcaniclastic rocks and garnet gneiss compared with the field for the seven flow interiors of Site 1137 basalts. Note the change of scale. F. Altered basalts and other samples from Site 1137.