Figure 9. 143Nd/144Nd vs. 87Sr/86Sr showing data points for basalts recovered from the Kerguelen Plateau and Broken Ridge. The Broken Ridge samples are measured data corrected to an eruption age of 88 Ma; the dredged Kerguelen Plate au samples are measured data corrected to an eruption age of 115 Ma. The effects of age correct ion are shown by the two fields (measured and age-corrected) for Site 738 on the southern Kerguelen P lateau. Data for other sites are not age-corrected because parent/daughter abundance ratios are n ot available. Data for Kerguelen Plateau and Broken Ridge samples are from Weis et al. (1989), Salters et al. (1992), and Mahoney et al. (1995). Shown for comparison are fields for SEIR MORB (Hamelin et al., 1985/1986; Michard et al., 1986; Dosso et al., 1988; J.J. Mahoney, unpubl. data) , St. Paul and Heard Islands (Heard data indicated by trajectory of solid line from Barling et al., 1 994), the Ninetyeast Ridge (shaded fields labeled NER and NER DSDP Site 216 from Weis and Frey, 1991, and Frey and Weis, 1995), and the entire Kerguelen Archipelago. Most samples are from the Kerguelen Archipelago plot in the subfield labeled "Kerguelen Plume?" that Weis et al. (19 93, 1998) interpreted as representative of the Kerguelen Plume.

To 183 Figure 10

To 183 Table of Contents

Figure 9