![]() ![]() At each site the Miocene±Pliocene boundary is de®ned by the ®rst appearance of Globorotalia tumida (5.2 Ma), the early/late Pliocene boundary by the ®rst appearance of Globigerinoides ®stulosus (3.2 Ma) and the Pliocene±Pleistocene boundary by the last appearance of G. Tropical planktic foraminifera occur throughout each sequence at all sites. (1985) to provide an accurate chronology to compare interocean stratigraphic ranges of late Neogene planktic foraminifera. A consistent stratigraphy was developed between sites 214 and 586 B using graphic correlation and was integrated with the paleomagnetic time scale of Berggren et al. ![]() ÐDeep sea cores from sites 214 and 758 A (Ninetyeast Ridge, northeast Indian Ocean), 761 B (Wombat Plateau, northeast Indian Ocean) and 586 B (Ontong Java Plateau, Tropical Paci®c) are ideally located for comparison of late Neogene planktic foraminiferal bio-geography and paleoceanographic records of tropical Indian and Paci®c oceans to infer the timing of closing of the Indonesian Seaway. ![]()
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