Continental ice in Greenland during the Eocene and Oligocene

James S. Eldrett, Ian C. Harding (), Paul A. Wilson, Emily Butler and Andrew P. Roberts
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James S. Eldrett: School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK
Ian C. Harding: School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK
Paul A. Wilson: School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK
Emily Butler: School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK
Andrew P. Roberts: School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK

Nature, 2007, vol. 446, issue 7132, 176-179

Abstract: To the ends of the Earth The cover shows an ice raft photographed in Kejser Franz Joseph Fjord, East Greenland National Park in 2006 by Simon A. Johnson of the University of Southampton. The transition from the Eocene to the Oligocene epoch, about 33.5 million years ago, saw a major climate shift from a warm world with no large ice sheets to one with a permanent Antarctic ice-sheet, similar in size to today's. The nature of the early glaciation history of the Northern Hemisphere is much debated, however. A paper in this issue reports stratigraphically extensive ice-rafted debris in late Eocene to early Oligocene sediments from the Norwegian–Greenland Sea, deposited between 38 and 30 million years ago. This suggests the presence of glaciers on Greenland 20 million years earlier than previously documented. International Polar Year 2007–8 gets under way this month, an event marked by series of News Features covering forthcoming drilling programmes and the latest predictions of future Arctic warming.

Date: 2007
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DOI: 10.1038/nature05591

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