C. Von Der Borch P.A. Baker C.E. Barton A. Boersma W.C. Dudley Jr. J.V. Gardner D.G. Jenkins W. Lohman R. Morin R. Martini R. B. Merrill Campbell S. Nelson C. Robert M.S. Srinivasan R. Stein A. Takeuchi J.P. Kennett 1983 [No abstract available] application/pdf 10.1038/303018a0 en Deep-Sea Drilling Project Leg 90: The South Pacific Cenozoic article