Less ice in the Arctic Ocean 6000-7000 years ago

Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice free.

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<p><a href="http://www.physorg.com/news143738391.html">Less ice in the Arctic Ocean 6000-7000 years ago</a></p> <p>Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice free.</p>