Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region
Nature
By: N. J. Shackleton, J. Backman, H. Zimmerman, D.V. Kent, M.A. Hall, David G. Roberts, D. Schnitker, J.G. Baldauf, A. Desprairies, R. Homrighausen, P. Huddlestun, J.B. Keene, A.J. Kaltenback, K.A.O. Krumsiek, A.C. Morton, J.W. Murray, and J. Westberg-Smith
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Abstract
We report here that DSDP Site 552A, cored with the hydraulic piston corer on the west flank of Rockall Bank, recovered an undisturbed sequence of alternating white deep-sea carbonate oozes and dark-coloured layers that are rich in glacial debris. Oxygen isotope analysis of the sequence together with detailed nannofossil and palaeomagnetic stratigraphy shows that the first major horizon of ice-rafting occurred at about 2.4 Myr, and was preceded by a minor pulse of ice-rafting at about 2.5 Myr. The carbon isotope record shows that the site has been bathed by a water mass of similar characteristics to present-day North Atlantic deep water at least since 3.5 Myr. ?? 1984 Nature Publishing Group.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region |
| Series title | Nature |
| DOI | 10.1038/307620a0 |
| Volume | 307 |
| Issue | 5952 |
| Year Published | 1984 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Nature |
| First page | 620 |
| Last page | 623 |
| Google Analytic Metrics | Metrics page |