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Core formation and the oxidation state of the Earth: Additional constraints from Nb, V and Cr partitioning |
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| Authors: | Bernard J Wood Jon Wade |
| Institution: | a GEMOC, Department of Earth and Planetary Sciences, Macquarie University, NSW 2109, Australia b Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK c Centre for Microscopy, Characterisation and Analysis, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia |
| Abstract: | We have combined metal-silicate partitioning data from the literature with new experimental results at 1.5-8 GPa and 1480-2000 °C to parameterize the effects of pressure, temperature and composition on the partitioning of V, Cr and Nb between liquid Fe metal (with low S and C content) and silicate melt.Using information from the steelmaking literature to correct for interactions in the metal phase, we find that, for peridotitic silicate melts, metal-silicate partition coefficients are given by: |
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