Figure F9. Normal-mid-ocean-ridge basalt (MORB) normalized multielement plots. Normalizing values in parts per million: Sr = 120, K = 1245, Rb = 2, Ba = 20, Th = 0.2, Ta = 0.18, Nb = 3.5, Ce = 10, P = 534, Zr = 90, Hf = 2.4, Sm = 3.3, Ti = 8992, Y = 30, Yb = 3.4 (Pearce, 1982). A. XRF data. B. Three least-altered basalts.

Figure F9. Normal-mid-ocean-ridge basalt (MORB) normalized multielement plots. Normalizing values in parts per million: Sr = 120, K = 1245, Rb = 2, Ba = 20, Th = 0.2, Ta = 0.18, Nb = 3.5, Ce = 10, P = 534, Zr = 90, Hf = 2.4, Sm = 3.3, Ti = 8992, Y = 30, Yb = 3.4 (Pearce, 1982). A. XRF data. B. Three least-altered basalts.