Monday, 28 May 2012

New kind of metal in the deep Earth: Iron oxide undergoes transition under intense pressures and temperatures

19.12.2011 17:22

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The intense pressures and temperatures in Earth's deep interior squeeze atoms and electrons so close they interact differently. New experiments and supercomputer computations have revealed that iron oxide undergoes a new kind of transition under deep Earth conditions. It is a component of the second most abundant mineral at Earth's lower mantle, ferropericlase. The finding could alter our understanding of deep Earth dynamics and the behavior of the protective magnetic field, which shields our planet.

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