Newly mapped features on the floor of the Arctic Ocean suggest that the Arctic basin was once covered by a one-kilometre-thick, flowing ice shelf derived from large ice sheets in eastern Siberia, Arctic Canada and the Barents Sea.
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Domack, E. A great Arctic ice shelf. Nature 530, 163–164 (2016). https://doi.org/10.1038/nature16878
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DOI: https://doi.org/10.1038/nature16878
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