Thermal diffusivity of MORB-composition rocks to 15GPa: Implications for triggering of deep seismicity

High Pressure Research

Volumn 30, Issue 3, 2010, Pages 406-414

  Dobson, David P ^a   Hunt, Simon A ^a   McCormack, Richard ^a   Lord, Oliver T ^b   Weidner, Donald J ^c   Li, Li ^c   Walker, Andrew M ^a,b  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b UNIVERSITY OF BRISTOL   (United Kingdom)

^c STONY BROOK UNIVERSITY   (United States)

Author keywords

deep earthquakes; high pressure; majorite; MORB; thermal diffusion

Indexed keywords

DEEP EARTHQUAKES; ECLOGITES; HIGH PRESSURE; INVERSE DEPENDENCE; LOW THERMAL CONDUCTIVITY; MAIN COMPONENT; MAJORITE; MANTLE TRANSITION ZONE; MORB; MORB COMPOSITIONS; OCEANIC CRUST; PHASE ASSEMBLAGES; RINGWOODITE; TRANSITION ZONES; WADSLEYITE;

EARTHQUAKES; METAMORPHIC ROCKS; SILICATE MINERALS; THERMAL DIFFUSION IN LIQUIDS; THERMAL DIFFUSIVITY;

DIFFUSION;

EID: 77956542397     PISSN: 08957959     EISSN: 14772299     Source Type: Journal    
DOI: 10.1080/08957959.2010.516827     Document Type: Article

References (22)

1. M. Osako and E. Ito, Thermal-diffusivity of MgSiO3 perovskite, Geophys. Res. Lett. 18 (1991), pp. 239-242.
2. Y.S. Xu, T.J. Shankland, S. Linhardt, D.C. Rubie, F. Langenhorst, and K. Klasinski, Thermal diffusivity and conductivity of olivine, wadsleyite and ringwoodite to 20GPa and 1373K, Phys. Earth Planet. Inter. 143-144 (2004), pp. 321-336.
3. H. Kanamori, N. Fujii, and H. Mizutani, Thermal diffusivity measurement of rock-forming minerals from 300 to 1100 K, J. Geophys. Res. 73 (1968), pp. 595-605.
4. K.I. Horai, Thermal conductivity of rock-forming minerals, J. Geophys. Res. 76 (1971), pp. 1278-1308.
5. M. Osako, Thermal diffusivity of olivine and garnet single crystals, Bull. Natl Sci. Mus. Tokyo, E20 (1997), pp. 1-7.
6. A.M. Hofmeister, Thermal diffusivity of garnets at high temperature, Phys. Chem. Miner. 33 (2006), pp. 45-62.
7. H. Marquardt, S. Ganschow, and F.R. Schilling, Thermal diffusivity of natural and synthetic garnet solid solution series, Phys. Chem. Miner. 36 (2009), pp. 107-118.
8. M. Osako, E. Ito, and A. Yoneda, Simultaneous measurements of thermal conductivity and thermal diffusivity for garnet and olivine under high pressure, Phys. Earth Planet. Inter. 143-144 (2004), pp. 311-320.
9. D.P. Dobson, S.A. Hunt, L. Li, and D.Weidner, Measurement of thermal diffusivity at high pressures and temperatures using synchrotron radiography, Mineral. Mag. 72 (2008), pp. 653-658.
10. J. Khedari, P. Benigni, J. Rogez, and J.C. Mathieu, New apparatus for thermal-diffusivity measurements of refractory solid materials by the periodic stationary method, Rev. Sci. Instrum. 66 (1995), pp. 193-198.
11. L. Brualla and P. Martin, Analytic approximations to Kelvin functions with applications to electromagnetics, J. Phys. A Math. Gen. 34 (2001), pp. 9153-9162.
12. T. Katsura, Thermal-diffusivity of silica glass at pressures up to 9-GPa, Phys. Chem. Miner. 20 (1993), pp. 201-208.
13. A.M. Hofmeister, Properties of rocks and minerals-Thermal conductivity of the Earth, in Treatise on Geophysics, G.D. Price, ed., Elsevier, Amsterdam, 2007, pp. 543-577.
14. L. Li, P. Raterron, D.Weidner, and J. Chen, Olivine flow mechanisms at 8 GPa, Phys. Earth Planet. Inter. 138 (2003), pp. 113-129.
15. Y. Nishihara, I. Aoki, E. Takahashi, K.N. Matsukage, and K. Funakoshi, Thermal equation of state of majorite with MORB composition, Phys Earth Planet Inter. 148 (2005), pp. 73-84.
16. F.C. Marton, T.J. Shankland, D.C. Rubie, and Y.S. Xu, Effects of variable thermal conductivity on the mineralogy of subducting slabs and implications for mechanisms of deep earthquakes, Phys. Earth Planet. Inter. 149 (2005), pp. 53-64.
17. D.T. Griggs and D.W. Baker, The origin of deep focus earthquakes, in Properties of Matter Under Unusual Conditions, H. Mark and S. Fernbach, eds.,Wiley, NewYork, 1969, pp. 23-42.
18. M. Ogawa, Shear instability in a viscoelastic material as the cause of deep focus earthquakes, J. Geophys. Res. 92 (1987), pp. 13801-13810.
19. S. Karato, M.R. Riedel, and D.A. Yuen, Rheological structure and deformation of subducted slabs in the mantle transition zone: Implications for mantle circulation and deep earthquakes, Phys. Earth Planet. Inter. 127 (2001), pp. 83-108.
20. D.A. Wiens, Seismological constraints on the mechanism of deep earthquakes: Temperature dependence of deep earthquake source properties, Phys. Earth Planet. Inter. 127 (2001), pp. 145-163.
21. C.H. Estabrook, Seismic constraints on mechanisms of deep earthquake rupture, J. Geophys. Res. 109 (2004), B02306.
22. P.A. Giesting, A.M. Hofmeister, B. Wopenka, G.D. Gwanmesia, and B.L. Jolliff, Thermal conductivity and thermodynamics of majoritic garnets: Implications for the transition zone, Earth Planet. Sci. Lett. 218 (2004), pp. 45-56.