
Figure F11. A. Normal mid-ocean-ridge basalt (MORB) normalized multielement diagram using ICP-MS whole-rock basalt data. These plots supplement the data shown in Figure F9. Normalizing values in parts per million: La = 0.31, Ce = 0.808, Pr = 0.122, Nd = 0.6, Pm = 1, Sm = 0.195, Eu = 0.0735, Gd = 0.2590, Tb = 0.0474, Dy = 0.322, Ho = 0.0718, Er = 0.21, Tm = 0.0324, Yb = 0.209, Lu = 0.0322 (from Pearce, 1982). B. Chrondrite-normalized rare earth element (REE) patterns. Normalizing values from Boynton (1984).

