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Alan Cox
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Alan Cox

American geophysicist
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The Information Architects of Encyclopaedia Britannica

Learn about this topic in these articles:

  • Earth's lithosphere and upper mantle
    oceanic crust
    / Marine magnetic anomalies

    Simultaneously, Alan Cox and several other American geophysicists documented evidence that Earth’s magnetic field had reversed in the past: the north magnetic pole had been the south magnetic pole about 700,000 years ago, and there were reasons to believe older reversals existed. Also at this time,…

    Read More

    Simultaneously, Alan Cox and several other American geophysicists documented evidence that Earth’s magnetic field had reversed in the past: the north magnetic pole had been the south magnetic pole about 700,000 years ago, and there were reasons to believe older reversals existed. Also at this time,…

    Read More