Melting and thermal expansion in the Fe-FeO system at high pressure

Earth and Planetary Science Letters

Volumn 265, Issue 3-4, 2008, Pages 655-665

  Seagle, C T ^a   Heinz, D L ^a,b   Campbell, A J ^c   Prakapenka, V B ^d   Wanless, S T ^a  

^a UNIVERSITY OF CHICAGO   (United States)

^b UNIVERSITY OF CHICAGO   (United States)

^c University of Maryland   (United States)

^d UNIVERSITY OF CHICAGO   (United States)

Author keywords

Earth's core; eutectic; Fe; FeO; melting; thermal expansion

Indexed keywords

DIAMOND ANVIL CELL (DAC); EARTH'S CORE; EUTECTIC COMPOSITION; EUTECTIC TEMPERATURE;

EUTECTICS; HIGH PRESSURE EFFECTS; IRON; IRON OXIDES; LASER HEATING; MELTING; PHASE DIAGRAMS; STRUCTURAL GEOLOGY; THERMAL EXPANSION; X RAY DIFFRACTION ANALYSIS;

EARTH SCIENCES;

CORE (PLANETARY); DIAMOND ANVIL CELL; HIGH PRESSURE SYSTEM; IRON OXIDE; MELTING; TEMPERATURE EFFECT; THERMAL EXPANSION; X-RAY DIFFRACTION;

EID: 38049079390     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2007.11.004     Document Type: Article

References (41)

1. Alfé D., Gillan M.J., and Price G.D. Composition and temperature of Earth's core constrained by combining ab initio calculations and seismic data. Earth Planet. Sci. Lett. 195 (2002) 91-98
2. Andrault D., Morard G., Bolfan-Casanova N., Ohtaka O., Fukui H., Arima H., Guignot N., Funakoshi K., Lazor P., and Mezouar M. Study of partial melting at high-pressure using in situ X-ray diffraction. High Press. Res. 26 (2006) 267-276
3. Benedetti L.R., Guignot N., and Farber D.L. Achieving accuracy in spectroradiometric measurements of temperature in the laser-heated diamond anvil cell: diamond is an optical component. J. Appl. Phys. 101 (2007)
4. Boehler R. Melting of the Fe-FeO and the Fe-FeS systems at high pressure - constraints on core temperatures. Earth Planet. Sci. Lett. 111 (1992) 217-227
5. Boehler R. Temperatures in the Earth's core from melting point measurements of iron at high static pressures. Nature 363 (1993) 534-536
6. Boehler R., Vonbargen N., and Chopelas A. Melting, thermal-expansion, and phase-transitions of iron at high-pressures. J. Geophys. Res.-Solid Earth and Planets 95 (1990) 21731-21736
7. Campbell A.J., Seagle C.T., Heinz D.L., Shen G., and Prakapenka V.B. Partial melting in the iron-sulfur system at high pressure: a synchrotron X-ray diffraction study. Phys. Earth Planet. Inter. 162 (2007) 119-128
8. Chopelas A., and Boehler R. Thermal-expansion measurements at very high-pressure, systematics, and a case for a chemically homogeneous mantle. Geophys. Res. Lett. 16 (1989) 1347-1350
9. Darken L.S., and Gurry R.W. The system iron oxygen 1. The wüstite field and related equilibria. J. Am. Chem. Soc. 67 (1945) 1398-1412
10. Darken L.S., and Gurry R.W. The system iron oxygen 2. Equilibrium and thermodynamics of liquid oxide and other phases. J. Am. Chem. Soc. 68 (1946) 798-816
11. Dubrovinsky L.S., Dubrovinskaia N.A., Saxena S.K., Annersten H., Halenius E., Harryson H., Tutti F., Rekhi S., and Le Bihan T. Stability of ferropericlase in the lower mantle. Science 289 (2000) 430-432
12. Fei Y. Thermal expansion. In: Ahrens T.J. (Ed). Mineral Physics and Crystallography A Handbook of Physical Constants (AGU Reference Shelf, No 2) (1995) 29-44
13. Fei Y.W., and Mao H.K. In-situ determination of the NiAs phase of FeO at high-pressure and temperature. Science 266 (1994) 1678-1680
14. Funamori N., Yagi T., and Uchida T. High-pressure and high-temperature in situ X-ray diffraction study of iron to above 30 GPa using MA8-type apparatus. Geophys. Res. Lett. 23 (1996) 953-956
15. 3 at lower mantle conditions and its geophysical implications. J. Geophys. Res.-Solid Earth 92 (1987) 11437-11444
16. Jeanloz R. The nature of Earth's core. Annu. Rev. Earth Planet. Sci. 18 (1990) 357-386
17. Jeanloz R., and Ahrens T.J. Equations of State of FeO and CaO. Geophys. J. R. Astron. Soc. 62 (1980) 505-528
18. 0.2O ferropericlase. Phys. Chem. Miner. 33 (2006) 35-44
19. 0.94O at elevated pressures and temperatures observed by shock-wave electrical resistivity measurements. Solid State Commun. 59 (1986) 513-515
20. 0.94O - a possible constituent of the Earth's core. J. Geophys. Res.-Solid Earth 96 (1991) 16169-16180
21. Kondo T., Ohtani E., Hirao N., Yagi T., and Kikegawa T. Phase transitions of (Mg,Fe)O at megabar pressures. Phys. Earth Planet. Inter. 143-144 (2004) 201-213
22. Lin J.F., Heinz D.L., Mao H.K., Hemley R.J., Devine J.M., Li J., and Shen G.Y. Stability of magnesiowüstite in Earth's lower mantle. Proc. Natl. Acad. Sci. U. S. A. 100 (2003) 4405-4408
23. Mao H.K., Shu J.F., Fei Y.W., Hu J.Z., and Hemley R.J. The wüstite enigma. Phys. Earth Planet. Inter. 96 (1996) 135-145
24. Mazin I., Fei Y.W., Downs R., and Cohen R. Possible polytypism in FeO at high pressures. Am. Mineral. 83 (1998) 451-457
25. xO: the iron rich phase boundary. Phys. Chem. Miner. 10 (1984) 106-113
26. McDonough W.F. Compositional model for the Earth's core. In: Carlson R.W. (Ed). Treatise on Geochemistry 2 (2003), Elsevier Ltd. 547-568
27. Murakami M., Hirose K., Ono S., Tsuchiya T., Isshiki M., and Watanuki T. High pressure and high temperature phase transitions of FeO. Phys. Earth Planet. Inter. 146 (2004) 273-282
28. Ohtani E., Ringwood A.E., and Hibberson W. Composition of the core 2. Effect of high-pressure on solubility of FeO in molten iron. Earth Planet. Sci. Lett. 71 (1984) 94-103
29. Poirier J.P. Light-elements in the Earth's outer core - a critical review. Phys. Earth Planet. Inter. 85 (1994) 319-337
30. Ringwood A.E., and Hibberson W. The system Fe-FeO revisited. Phys. Chem. Miner. 17 (1990) 313-319
31. Rubie D.C., Gessmann C.K., and Frost D.J. Partitioning of oxygen during core formation on the Earth and Mars. Nature 429 (2004) 58-61
32. 3S and implications for sulfur in Earth's core. J. Geophys. Res.- Solid Earth 111 (2006) B06209
33. Shen G.Y., Lazor P., and Saxena S.K. Melting of wüstite and iron up to pressures of 600 kbar. Phys. Chem. Miner. 20 (1993) 91-96
34. Shen G., Mao H.K., Hemley R.J., Duffy T.S., and Rivers M.L. Melting and crystal structure of iron at high pressures and temperatures. Geophys. Res. Lett. 25 (1998) 373-376
35. Shen G., Prakapenka V., Eng P., Rivers M., and Sutton S. Facilities for high-pressure research with the diamond anvil cell at GSECARS. J. Synchrotron Radiat. 12 (2005) 642-649
36. Shen G.Y., Rivers M.L., Wang Y.B., and Sutton S.R. Laser heated diamond cell system at the Advanced Photon Source for in situ X-ray measurements at high pressure and temperature. Rev. Sci. Instrum. 72 (2001) 1273-1282
37. Shen G.Y., Prakapenka V.B., Rivers M.L., and Sutton S.R. Structure of liquid iron at pressures up to 58 GPa. Phys. Rev. Lett. 92 (2004) 185701
38. Struzhkin V.V., Mao H.K., Hu J.Z., Schwoerer-Bohning M., Shu J.F., Hemley R.J., Sturhahn W., Hu M.Y., Alp E.E., Eng P., and Shen G.Y. Nuclear inelastic X-ray scattering of FeO to 48 GPa. Phys. Rev. Lett. 87 (2001)
39. Tsuno K., Ohtani E., and Terasaki H. Immiscible two-liquid regions in the Fe-O-S system at high pressure: implications for planetary cores. Phys. Earth Planet. Inter. 160 (2007) 75-85
40. Williams Q., Jeanloz R., Bass J., Svendsen B., and Ahrens T.J. The melting curve of iron to 250 gigapascals - a constraint on the temperature at Earth's center. Science 236 (1987) 181-182
41. xO. Phys. Chem. Miner. 32 (2005) 241-247