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An Ocean of Magma at the Origin of the Ancient Earth's Magnetic Field?
Summary by Université Grenoble Alpes
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Published in the journal PNAS, a study explores the hypothesis that the primitive terrestrial magnetic field could have been born in the subterranean magma ocean surrounding the nucleus, at the Earth's mantle base. Thanks to high-resolution numerical simulations conducted on French supercomputers, scientists show that the electrical conductivity of such an ocean would be insufficient to explain the magnetic field recorded in ancient rocks. The m…
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