Figure F1. Regional map of the Southeast Indian Ocean after Pyle et al. (1995) showing magnetic lineations (Cande et al., 1989) and DSDP sites that sampled basement (numbered solid circles). Dark line defining V-shape east of the Australian Antarctic Discordance (AAD) is the hypothetical trace of a rapidly migrating (40 mm/yr) isotopic boundary. (This hypothesis is disproved by the results of Leg 187.) Broader gray V-shape of the approximate midline (axis) of the regional depth anomaly traces a slower (15 mm/ yr) westward relative migration (Marks et al., 1990). Bull's-eye symbols are dredge sites of Lanyon et al. (1995). Boxes outline the area of operations of Leg 187 and the approximate area of Figure F2.

Figure F1. Regional map of the Southeast Indian Ocean after Pyle et al. (1995) showing magnetic lineations (Cande et al., 1989) and DSDP sites that sampled basement (numbered solid circles). Dark line defining V-shape east of the Australian Antarctic Discordance (AAD) is the hypothetical trace of a rapidly migrating (40 mm/yr) isotopic boundary. (This hypothesis is disproved by the results of Leg 187.) Broader gray V-shape of the approximate midline (axis) of the regional depth anomaly traces a slower (15 mm/ yr) westward relative migration (Marks et al., 1990). Bull's-eye symbols are dredge sites of Lanyon et al. (1995). Boxes outline the area of operations of Leg 187 and the approximate area of Figure F2.