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Hirsch 1991

Hirsch, L.M. (1991). The Fe-FeO buffer at lower mantle pressures and temperatures. Geophysical Research Letters 18: doi: 10.1029/91GL01583. issn: 0094-8276.

As a constraint on oxygen fugacity of the lower mantle, the iron-w¿stite (IW) oxygen buffer has been calculated for temperatures to 3000 K and pressures to 135 GPa using available thermochemical and thermophysical data for Fe, FeO, and O2. At conditions corresponding to the core-mantle boundary and 670 km depth, respectively, the oxygen fugacity of this buffer is 1020 and 103 Pa; oxygen activities referenced to these conditions are 10-9 and 10-13. ¿American Geophysical Union 1991

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	Abstract

Keywords
Mineral Physics, Physical thermodynamics, Mineral Physics, High-pressure behavior, Mineralogy, Petrology, and Rock Chemistry, Composition of the mantle and core, Mineralogy, Petrology, and Rock Chemistry, General or miscellaneous, Mineralogy, Petrology, and Rock Chemistry, Instruments and techniques

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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