Figure 11. Ta/Yb vs. Th/Yb (after Pearce, 1983) for Alboran basaltic rocks from Sites 977 and 978, which illustrates the difference between the LREE-enriched and LREE-depleted groups. All basalts have clear subduction zone affinities.

Figure 11. Ta/Yb vs. Th/Yb (after Pearce, 1983) for Alboran basaltic rocks from Sites 977 and 978, which illustrates the difference between the LREE-enriched and LREE-depleted groups. All basalts have clear subduction zone affinities.