Fe-Mg interdiffusion in wadsleyite: The role of pressure, temperature and composition and the magnitude of jump in diffusion rates at the 410 km discontinuity

Physics of the Earth and Planetary Interiors

Volumn 172, Issue 1-2, 2009, Pages 28-33

  Holzapfel, C ^a   Chakraborty, S ^b   Rubie, D C ^a   Frost, D J ^a  

^a UNIVERSITÄT BAYREUTH   (Germany)

^b RUHR UNIVERSITY BOCHUM   (Germany)

Author keywords

Activation energy; Activation volume; Diffusion; Mantle transition zone; Multianvil; Olivine; Olivine wadsleyite phase transition; Pressure; Wadsleyite

Indexed keywords

ACTIVATION ENERGY; ALUMINUM; APPROXIMATION THEORY; CHEMICAL ACTIVATION; EARTH (PLANET); ELECTRIC CONDUCTIVITY; EXPERIMENTS; MAGNESIUM PRINTING PLATES; MANGANESE; MANGANESE COMPOUNDS; OLIVINE; OXIDE MINERALS; PEROVSKITE; PHASE TRANSITIONS; POSITIVE IONS; SEMICONDUCTOR DOPING; SILICATE MINERALS; SILICON COMPOUNDS; TECTONICS;

ACTIVATION VOLUME; ACTIVATION VOLUMES; CATION DIFFUSIONS; CHEMICAL HETEROGENEITIES; COLD SUBDUCTING SLABS; COMPOSITIONAL DEPENDENCES; DIFFUSION COEFFICIENTS; DIFFUSION DATUMS; DIFFUSION RATES; DIFFUSIVE MIXING; DIVALENT CATIONS; EARTH'S MANTLES; EFFECT OF PRESSURES; ELECTRICAL CONDUCTIVITIES; EXPERIMENTAL SET-UP; EXPERIMENTAL TEMPERATURE RANGES; IN DIFFUSIONS; INTER DIFFUSIONS; INTERDIFFUSION RATES; LOWER MANTLES; MANTLE TRANSITION ZONE; MANTLE TRANSITION ZONES; MODELING PROCESSES; MULTIANVIL; ORDERS OF MAGNITUDES; PRESSURE DEPENDENCES; RINGWOODITE; TRANSITION ZONES; UPPER MANTLES; WADSLEYITE; WILLIAMS;

DIFFUSION;

ACTIVATION ENERGY; DIFFUSION; EXPERIMENTAL MINERALOGY; HIGH PRESSURE; HIGH TEMPERATURE; WADSLEYITE;

EID: 57349181481     PISSN: 00319201     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pepi.2008.09.005     Document Type: Article

References (26)

1. 2O system up to 24 GPa: implications for the distribution of water in the Earth's mantle Earth planet. Sci. Lett. 182 (2000) 209-221
2. Chakraborty S. Rates and mechanisms of Fe-Mg interdiffusion in olivine at 980-1300 °C. J. Geophys. Res. 102 (1997) 12317-12331
3. Chakraborty S. Diffusion in solid silicates-a tool to track timescales of processes comes of age. Annu. Rev. Earth Planet. Sci. 36 (2008) 153-190
4. Chakraborty S., Knoche R., Schulze H., Rubie D.C., Dobson D., Ross N.L., and Angel R.J. Enhancement of cation diffusion rates across the 410-kilometer discontinuity in Earth's mantle. Science 283 (1999) 362-365
5. Costa F., and Chakraborty S. The effect of water on Si and O diffusion rates in olivine and implications for transport properties and processes in the upper mantle. Phys. Earth Planet. Inter. 66 (2008) 11-29
6. Demouchy S., Mackwell S.J., and Kohlstedt D.L. Influence of hydrogen on Fe-Mg interdiffusion in (Mg, Fe)O and implications for Earth's lower mantle. Contrib. Miner. Petrol. 154 (2007) 279-289
7. Dohmen R., and Chakraborty S. Fe-Mg diffusion in olivine II: point defect chemistry, change of diffusion mechanisms and a model for calculation of diffusion coefficients in natural olivine. Phys. Chem. Miner. 34 (2007) 409-430
8. Dohmen R., Becker H.-W., and Chakraborty S. Fe-Mg diffusion coefficients in olivine. Part I. Experimental determination between 700 and 1200 °C as a function of composition, crystal orientation and oxygen fugacity. Phys. Chem. Miner. 34 (2007) 389-407
9. 4 spinel (ringwoodite), β-phase (wadsleyite), and olivine: implications for the electrical conductivity of the mantle. J. Geophys. Res. 105 (2000) 513-529
10. Hier-Majumder, S., Anderson, I.M., Kohlstedt, D.L., 2005. Influence of protons on Fe-Mg interdiffusion in olivine. J. Geophys. Res. 110, B02202, doi:10.1029/2004JB003292.
11. Holzapfel C., Rubie D.C., Mackwell S., and Frost D.J. Effect of pressure on Fe-Mg interdiffusion in (Fe,Mg)O, ferropericlase. Phys. Earth Planet. Int. 139 (2003) 21-34
12. 3 perovskite and lower mantle reequilibration. Science 309 (2005) 1707-1710
13. 4 olivine. Phys. Earth Planet. Int. 162 (2007) 186-198
14. 4. J. Geophys. Res. 109 (2004) B02209 doi: 10.1029/2003JB002438
15. Keppler H., and Frost D.J. Introduction to minerals under extreme conditions. In: Miletich R. (Ed). Mineral Behavior at Extreme Conditions, Lecture Notes in Mineralogy, vol. 7 (2005), European Mineralogical Union pp. 1-30
16. 4. Contrib. Miner. Petrol 123 (1996) 345-357
17. Kubo T., Shimojuko A., and Ohtani E. Fe-Mg interdiffusion rates in wadsleyite and the diffusivity jump at the 410 km discontinuity. Phys. Chem. Miner. 31 (2004) 456-464
18. 2+ and Mg in aluminous spinel: experimental determination and applications. Geochim. Cosmochim. Acta 66 (2002) 2903-2913
19. Manning D.R. Diffusion kinetics and mechanisms in simple crystals. In: Hoffmann A.W., Giletti B.J., Yoder H.S., and Yund R.A. (Eds). Geochemical Transport and Kinetics (1974), Carnegie Institution of Washington pp. 3-13
20. 4. Am. Miner. 76 (1991) 354-360
21. Paterson M.S. The determination of hydroxyl by infrared absorption in quartz, silicate glasses and similar materials. Bull. Miner. 105 (1982) 20-29
22. Rubie D.C., Karato S., Yan H., and O'Neill H.S.C. Low differential stress and controlled chemical environment in multianvil high-pressure experiments. Phys. Chem. Miner. 20 (1993) 315-322
23. Sheng Y.J., and Wasserburg G.J. Self-diffusion of magnesium in spinel and in equilibrium melts: constraints on flash heating of silicates. Geochim. Cosmochim. Acta 56 (1992) 2535-2546
24. 4: a potential host for water in the mantle?. Am. Miner. 72 (1987) 1051-1055
25. 4. Appl. Phys. Lett. 85 (2004) 209-211
26. Yund R.A., and Tullis J. Compositional changes of minerals associated with dynamic recrystallization. Contrib. Miner. Petrol 108 (1991) 346-355