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Nature 442, 251-252 (20 July 2006) | doi:10.1038/442251a; Published online 19 July 2006

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Plate tectonics: Magma does the splits

Freysteinn Sigmundsson1

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A minor volcanic eruption in Ethiopia was the main visible clue to a massive injection of magma along the Afar rift last year. Such inconspicuous processes could have been crucial in early continental break-up.

Earth's surface is a mosaic of cool, strong rock plates that are moving continuously at rates of up to 12 centimetres a year. On page 291 of this issue1, Wright et al.

  1. Freysteinn Sigmundsson is at the Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, Sturlugata 7, Askja, 101 Reykjavik, Iceland.
    Email: fs@hi.is

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