Olivine emerges from isolation

Craig R. Bina ()
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Craig R. Bina: Northwestern University

Nature, 1998, vol. 392, issue 6677, 651-653

Abstract: At a depth of around 410 km in the Earth's mantle, the speed of seismic waves rises sharply. The reason is thought to be the high-pressure transformation of the mineral olivine to wadsleyite at that depth. Seismological data have however been at odds with laboratory work with these minerals, in which their behaviour is extrapolated to mantle conditions. A study showing that manganese and iron can be exchanged between olivine and other mantle minerals is a step towards resolving these discrepancies.

Date: 1998
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DOI: 10.1038/33531

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