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Science 11 June 2004:
Vol. 304. no. 5677, p. 1561
DOI: 10.1126/science.304.5677.1561m
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The amount of oxygen in the mantle influences the composition, rheology, and melting behavior of mantle rocks and may affect crustal and even atmospheric conditions over geologic time scales. Williams et al. (p. 1656) have measured a correlation between iron isotopic abundances and relative oxygen fugacity in spinels from mantle peridotites. This correlation may make it easier to estimate the activity of oxygen in the mantle from iron isotopes.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)