Figure F5. 143Nd/144Nd vs. 87Sr/86Sr isotopic compositions. Arrows show the water/rock proportion in representative Holes 1160B (Pacific) and 1155B (Indian). All altered samples show a shift in 87Sr/86Sr from mantle values toward seawater composition. Nd isotopic ratios are homogeneous within individual sites and remain constant during low-temperature alteration. Indian and Pacific mantle domains for fresh glass are from Pyle et al., 1992, and D. Pyle, pers. comm., 2004. Figure from S. Krolikowska-Ciaglo, F. Hauff, and K. Hoernle (pers. comm., 2003). AAD = Australian Antarctic Discordance.

Figure F5. ¹⁴³Nd/¹⁴⁴Nd vs. ⁸⁷Sr/⁸⁶Sr isotopic compositions. Arrows show the water/rock proportion in representative Holes 1160B (Pacific) and 1155B (Indian). All altered samples show a shift in ⁸⁷Sr/⁸⁶Sr from mantle values toward seawater composition. Nd isotopic ratios are homogeneous within individual sites and remain constant during low-temperature alteration. Indian and Pacific mantle domains for fresh glass are from Pyle et al., 1992, and D. Pyle, pers. comm., 2004. Figure from S. Krolikowska-Ciaglo, F. Hauff, and K. Hoernle (pers. comm., 2003). AAD = Australian Antarctic Discordance.