Non-ideal liquidus curve in the Fe-S system and Mercury's snowing core

Geophysical Research Letters

Volumn 35, Issue 7, 2008, Pages

  Chen, Bin ^a   Li, Jie ^a   Hauck II, Steven A ^b  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

^b CASE WESTERN RESERVE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER NETWORKS; CURVES (ROAD); MAGNETIC FIELDS; MAGNETISM; MERCURY (METAL); MIXING; PRECIPITATION (METEOROLOGY); PRESSURE; SULFUR; SURFACE SEGREGATION;

(I ,J) CONDITIONS; AMERICAN GEOPHYSICAL UNION; CHEMICAL STATES; IDEAL MIXING; IDEAL SOLUTIONS; INFLECTION POINTS; LIQUIDUS; LIQUIDUS TEMPERATURES; LOWER PRESSURES; MAGNETIC (CE); MELTING BEHAVIORS; MERCURY(III); MODERATE PRESSURES; S SYSTEMS; SEGREGATION (BENEFICIATION); SHALLOW DEPTHS; SOLID IRON; SULFUR (SUF) SYSTEM; SURFACE EXPRESSION;

IRON;

CORE (PLANETARY); IRON; LOW PRESSURE SYSTEM; MAGNETIC FIELD; MERCURY (PLANET); PLANETARY SURFACE; SULFUR; TEMPERATURE GRADIENT;

EID: 45549093899     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2008GL033311     Document Type: Article

References (26)

1. Boehler, R. (1993), Temperatures in the Earth's core from melting-point measurements of iron at high static pressures, Nature, 363, 534-536.
2. Brett, R., and P. M. Bell (1969), Melting relations in the Fe-rich portion of the system Fe-FeS at 30 kb pressure, Earth Planet. Sci. Lett., 6, 479-482.
3. Christensen, U. R. (2006), A deep dynamo generating Mercury's magnetic field, Nature, 444, 1056-1058.
4. Dehoff, R. (2006), Thermodynamics in Materials Science, 605 pp., CRC Press, Boca Raton, Fla.
5. 2, and melting relations in the system Fe-FeS, Science, 275, 1621-1623.
6. 3S, a new iron-sulfur compound, Am. Mineral., 85, 1830-1833.
7. Fei, Y., L. Zhang, T. Komabayashi, N. Sata, and C. M. Bertka (2006), Evidences for a liquid Martian core, Proc. Lunar Planet. Sci., XXXVII, abstract 1500.
8. Harder, H., and G. Schubert (2001), Sulfur in Mercury's core?, Icarus, 151, 118-122.
9. Hauck, S. A., II, A. J. Dombard, R. J. Phillips, and S. C. Solomon (2004), Internal and tectonic evolution of Mercury, Earth Planet. Sci. Lett., 222, 713-728.
10. Hauck, S. A., II, J. M. Aurnou, and A. J. Dombard (2006), Sulfur's impact on core evolution and magnetic field generation on Ganymede, J. Geophys. Res., 111, E09008, doi:10.1029/2005JE002557.
11. Li, J., Y. Fei, H. K. Mao, K. Hirose, and S. R. Shieh (2001), Sulfur in the Earth's inner core, Earth Planet. Sci. Lett., 193, 509-514.
12. Margot, J. L., S. J. Peale, R. F. Jurgens, M. A. Slade, and I. V. Holin (2007), Large longitude libration of Mercury reveals a molten core, Science, 316, 710-714.
13. McBride, N., and I. Gilmour (Eds.) (2004), An Introduction to the Solar System, 418 pp., Cambridge Univ. Press, Cambridge, U. K.
14. Morard, G., et al. (2007), Structure of eutectic Fe-FeS melts to pressures up to 17 GPa: Implications for planetary cores, Earth Planet. Sci. Lett., 263, 128-139.
15. Morgan, J. W., and E. Anders (1980), Chemical composition of Earth, Venus and Mercury, Proc. Natl. Acad. Sci. U. S. A., 77, 6973-6977.
16. Ness, N. F., K. W. Behannon, R. P. Lepping, and Y. C. Whang (1975), Magnetic field of Mercury confirmed, Nature, 255, 204-205.
17. Rueff, J. P., et al. (1999), Magnetic and structural alpha-epsilon phase transition in Fe monitored by X-ray emission spectroscopy, Phys. Rev. B, 60, 14,510-14,512.
18. Shen, G., H. K. Mao, R. J. Hemley, T. S. Duffy, and M. L. Rivers (1998), Melting and crystal structure of iron at high pressures and temperatures, Geophys. Res. Lett., 25, 373-376.
19. Shen, G., V. B. Prakapenka, M. L. Rivers, and S. R. Sutton (2004), Structure of liquid iron at pressures up to 58 GPa, Phys. Rev. Lett., 92, 185701.
20. Solomon, S. C. (2003), Mercury: The enigmatic innermost planet, Earth Planet. Sci. Lett., 216, 441-455.
21. Solomon, S. C., et al. (2001), The MESSENGER mission to Mercury: Scientific objectives and implementation, Planet. Space Sci., 49, 1445-1465.
22. Stanley, S., J. Bloxham, W. E. Hutchison, and M. T. Zuber (2005), Thin shell dynamo models consistent with Mercury's weak observed magnetic field, Earth Planet. Sci. Lett., 234, 27-38.
23. Stevenson, D. J. (2003), Planetary magnetic fields, Earth Planet. Sci. Lett., 208, 1-11.
24. Stevenson, D. J., T. Spohn, and G. Schubert (1983), Magnetism and thermal evolution of the terrestrial planets, Icarus, 54, 466-489.
25. Stewart, A. J., M. W. Schmidt, W. van Westrenen, and C. Liebske (2007), Mars: A new core-crystallization regime, Science, 316, 1323-1325.
26. Turcotte, D. L., and G. Schubert (2002), Geodynamics, 472 pp., Cambridge Univ. Press, Cambridge, U. K.