Experimental evidence for the existence of iron-rich metal in the Earth's lower mantle

Nature

Volumn 428, Issue 6981, 2004, Pages 409-412

  Frost, Daniel J ^a   Liebske, Christian ^a   Langenhorst, Faiko ^a   McCammon, Catherine A ^a   Trønnes, Reidar G ^a,b   Rubie, David C ^a  

^a UNIVERSITÄT BAYREUTH   (Germany)

^b UNIVERSITY OF ICELAND   (Iceland)

Author keywords

[No Author keywords available]

Indexed keywords

IRON; OXIDATION; OXYGEN; PEROVSKITE; REDOX REACTIONS; SILICATES;

CHEMICAL EQUILIBRIUM; MANTLE;

EARTH (PLANET);

IRON; METAL; PEROVSKITE;

ALLOY; IRON; MANTLE CHEMISTRY; PEROVSKITE; REDOX CONDITIONS;

ARTICLE; ASTRONOMY; COMPUTER SIMULATION; CRYSTALLIZATION; EQUILIBRIUM CONSTANT; GEOCHEMICAL ANALYSIS; MODEL; OXIDATION REDUCTION REACTION; PHASE TRANSITION; PRIORITY JOURNAL;

EID: 1842420623     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/nature02413     Document Type: Article

References (30)

1. O'Neill, H. St C. & Wall, V. J. The olivine-orthopyroxene-spinel oxygen geobarometer, the nickel precipitation curve, and the oxygen fugacity of the Earth's upper mantle. J. Petrol. 28, 1169-1191 (1987).
2. Luth, R. W., Virgo, D., Boyd, F. R. & Wood, B. J. Ferric iron in mantle derived garnets: implications for thermobarometry and the oxidation state of the mantle. Contrib. Mineral. Petrol. 104, 56-72 (1990).
3. Badlhaus, C., Berry, R. F. & Green, D. H. High pressure experimental calibration of the olivine-orthopyroxene-spinel oxygen geobarometer: implications for the oxidation state of the upper mantle. Contrib. Mineral. Petrol. 107, 27-40 (1991).
4. 3+ content. Am. Mineral. 78, 456-460 (1993).
5. O'Neill, H. St C. et al. Ferric Iron in the Upper Mantle and in Transition Zone Assemblages: Implications for Relative Oxygen Fugacities in the Mantle Vol. 14, 73-89 (Geophys. Monogr. 74, International Union of Geodesy and Geophysics (IUGG), Washington DC, 1993).
6. Canil, D. & O'Neill, H. St C. Distribution of ferric iron in some upper mantle assemblages. J. Petrol. 37, 609-635 (1996).
7. van Aken, P. A., Liebscher, B. & Styrsa, V. S. Quantitative determination of iron oxidation states in minerals using Fe L2,3-edge electron energy-loss near-edge structure spectroscopy. Phys. Chem. Mineral. 5, 323-327 (1998).
8. 3 perovskite: a highly oxidised component of the lower mantle. Contrib. Mineral. Petrol. 138, 17-26 (2000).
9. 3 on Fe-Mg partitioning between magnesiowüstite and magnesium silicate perovskite. Earth Planet. Sci. Lett. 199, 227-241 (2002).
10. McCammon, C. Perovskite as a possible sink for ferric iron in the lower mantle. Nature 387, 694-696 (1997).
11. Richmond, N. C. & Brodholt, J. P. Calculated role of alumina in the incorporation of ferric iron into magnesium silicate perovskite. Am. Mineral. 83, 947-951 (1998).
12. McDonough, W. F. & Sun, S.-s. The composition of the Earth. Chem. Geol. 120, 223-253 (1995).
13. O'Neill, H. S. C. & Palme, H. in The Earth's Mantle (ed. Jackson, I.) 3-126 (Cambridge Univ. Press, Cambridge, 1998).
14. Irifune, T. Absence of an aluminous phase in the upper part of the lower mantle. Nature 370, 131-133 (1994).
15. Kesson, S. E., Fitz Gerald, J. D. & Shelley, J. M. Mineralogy and dynamics of a pyrolite lower mantle. Nature 392, 252-255 (1998).
16. van der Hilst, R. D., Widiyantoro, S. & Engdahl, E. R. Evidence for deep mantle circulation from global tomography. Nature 386, 578-584 (1997).
17. Canil, D. Vanadium partitioning and the oxidation state of Archaean komatiite magmas. Nature 389, 842-845 (1997).
18. Delano, J. W. Redox history of the Earth's interior since ∼3900 Ma: Implications for prebiotic molecules. Orig. Life Evol. Biosph. 31, 311-341 (2001).
19. Wood, B. J., Pawley, A. & Frost, D. J. Water and carbon in the Earth's mantle. Phil. Trans. R. Soc. Lond. A 354, 1495-1511 (1996).
20. Ballhaus, C. Is the upper-mantle metal-saturated? Earth Planet. Sci. Lett. 132, 75-86 (1995).
21. 4-bearing upper-mantle sources. Geochim. Cosmochim. Acta 58, 4931-4940 (1994).
22. Asahara, Y., Kubo, T. & Kondo, T. Phase relations of a carbonaceous chondrite at lower mantle conditions. Phys. Earth Planet. Inter. (in the press).
23. Walter, M. J., Newsom, H. E., Ertel, W. & Holzheid, A. in Origin of the Earth and Moon (eds Canup, R. & Righter, K.) 285-289 (Univ. Arizona Press, Tucson, 2000).
24. Shannon, M. C. & Agee, C. B. Percolation of core melts at lower mantle conditions. Science 280, 1059-1061 (1998).
25. Agee, C. B. & Shannon, M. C. Experimental constraints on percolative core formation at lower mantle conditions. Lunar Planet. Sci. Abstr. XXVIII, 7 (1997).
26. Xu, Y. S., McCammon, C. & Poe, B. T. The effect of alumina on the electrical conductivity of silicate perovskite. Science 282, 922-924 (1998).
27. O'Neill, H. S. C. The origin of the Moon and the early history of the Earth-A chemical model. Part 2: The Earth. Geochim. Cosmochim. Acta 55, 1159-1172 (1991).
28. 2 and silicate and metallic melt composition. Phys. Earth Planet. Inter. 100, 115-134 (1997).
29. Stevenson, D. J. in Origin of the Earth (eds Newsom, H. E. & Jones, J. H) 231-249 (Oxford Univ. Press, Oxford, 1990).
30. Ringwood, A. E. Chemical evolution of the terrestrial planets. Geochim. Cosmochim. Acta 30, 41-104 (1966).