Deep mantle heat flow and thermal evolution of the Earth's core in thermochemical multiphase models of mantle convection

Geochemistry, Geophysics, Geosystems

Volumn 6, Issue 8, 2005, Pages

  Nakagawa, Takashi ^a   Tackley, Paul J ^b,c  

^a UNIVERSITY OF TOKYO   (Japan)

^b UNIVERSITY OF CALIFORNIA   (United States)

^c UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Core mantle boundary; Multicomponent phase changes; Radioactive heating; Thermal evolution

Indexed keywords

EID: 33745862515     PISSN: 15252027     EISSN: 15252027     Source Type: Journal    
DOI: 10.1029/2005GC000967     Document Type: Article

References (45)

1. Alfe, D., M. J. Gillan, and D. G. Price (2002), Composition and temperature of the Earth's core constrained by ab initio calculations and seismic data, Earth Planet. Sci. Lett., 195, 91-98.
2. Boehler, R. (2000), High-pressure experiments and the phase diagram of lower mantle and core material, Rev. Geophys., 38, 221-245.
3. Buffett, B. A. (2002), Estimates of heat flow in the deep mantle based on the power requirements for the geodynamo, Geophys. Res. Lett., 29(12), 1566, doi:10.1029/2001GL014649.
4. Buffett, B. A., H. E. Huppert, J. R. Lister, and A. W. Woods (1992), Analytical model for solidification of the Earth's core, Nature, 356, 329-331.
5. Buffett, B. A., H. E. Huppert, J. R. Lister, and A. W. Woods (1996), On the thermal evolution of the Earth's core, J. Geophys. Res., 101, 7989-8006.
6. Christensen, U. R., and A. Tilgner (2004), Power requirement of the geodynamo from ohmic losses in numerical and laboratory dynamos, Nature, 429, 169-171.
7. Christensen, U. R., and D. A. Yuen (1985), Layered convection induced by phase transitions, J. Geophys. Res., 90, 291-300.
8. Gessmann, C. L., and B. J. Wood (2002), Potassium in the Earth's core, Earth Planet. Sci. Lett., 200, 63-78.
9. Grigné, C., and S. Labrosse (2001), Effects of continents on earth cooling: Thermal blanketing and depletion in radioactive elements, Geophys. Res. Lett., 28, 2707-2710.
10. Grigné, C., S. Labrosse, and P. J. Tackley (2005), Convective heat transfer as a function of wavelength: Implications for the cooling of the Earth, J. Geophys. Res., 110, B03409, doi:10.1029/2004JB003376. (Pubitemid 40959103)
11. Hernlund, J. W., C. Thomas, and P. J. Tackley (2005), A doubling of the post-perovskite phase boundary and structure of the Earth's lowermost mantle, Nature, 434, 882-886.
12. Hofmeister, A. M. (1999), Mantle values of thermal conductivity and the geotherm from phonon lifetimes, Science, 283, 1699-1706.
13. Irifune, T., and A. E. Ringwood (1993), Phase transformations in subducted oceanic crust and buoyancy relationship at depths of 600-800 km in the mantle, Earth Planet. Sci. Lett., 117, 101-110.
14. Kesson, S. E., J. D. F. Gerald, and J. M. Shelley (1998), Mineralogy and dynamics of a pyrolite lower mantle, Nature, 393, 252-255.
15. Korenaga, J. (2003), Energetics of mantle convection and the fate of fossil heat, Geophys. Res. Lett., 30(8), 1437, doi:10.1029/2003GL016982.
16. Labrosse, S. (2003), Thermal and magnetic evolution of the Earth's core, Phys. Earth Planet. Inter., 140, 127-143.
17. Labrosse, S., J.-P. Poirier, and J.-L. Mouel (2001), The age of the inner core, Earth Planet. Sci. Lett., 190, 111-123.
18. Lenardic, A., L. N. Moresi, A. M. Jellinek, and M. Manga (2005), Continental insulation, mantle cooling, and the surface area of oceans and continents, Earth Planet. Sci. Lett., 234, 317-333.
19. Lister, J. R. (2003), Expression for the dissipation driven by convection in the Earth's core, Phys. Earth Planet. Inter., 140, 145-158.
20. McNamara, A. K., and S. Zhong (2004), The influence of thermochemical convection on the fixity of mantle plumes, Earth Planet. Sci. Lett., 222, 485-500.
21. Murakami, M., K. Hirose, N. Sata, Y. Ohishi, and K. Kawamura (2004), Phase transition ofMgSiO3 perovskite in the deep lower mantle, Science, 855-858.
22. Murthy, V. R., W. van Westrenen, and Y. Fei (2003), Radioactive heat source in planetary cores: Experimental evidence for potassium, Nature, 423, 164-165.
23. Nakagawa, T., and P. J. Tackley (2004a), Effects of thermo-chemical mantle convection on the thermal evolution of the Earth's core, Earth Planet. Sci. Lett., 220, 107-119.
24. Nakagawa, T., and P. J. Tackley (2004b), Effects of a perovskite-post perovskite phase change near core-mantle boundary in compressible mantle convection, Geophys. Res. Lett., 31, L16611, doi:10.1029/2004GL020648. (Pubitemid 39428504)
25. Nakagawa, T., and P. J. Tackley (2005), The interaction between the post-perovskite phase change and a thermo-chemical boundary layer near the core-mantle boundary, Earth Planet. Sci. Lett., in press.
26. Nimmo, F., G. D. Price, J. Brodholt, and D. Gubbins (2004), The influence of potassium on core and geodynamo evolution, Geophys. J. Int., 156, 363-376.
27. Oganov, A. R., and S. Ono (2004), Theoretical and experimental evidence for a post-perovskite phase of MgSiO3 in Earth's D" layer, Nature, 430, 445-448.
28. Ogawa, M. (2003), Chemical stratification in a two-dimensional convecting mantle with magmatism and moving plates, J. Geophys. Res., 108(B12), 2561, doi:10.1029/2002JB002205.
29. Oldham, D., and J. H. Davies (2004), Numerical investigation of layered convection in a three-dimensional shell with application to planetary mantles, Geochem. Geophys. Geosyst., 5, Q12C04, doi:10.1029/2003GC000603.
30. Ono, S., E. Ito, and T. Katsura (2001), Mineralogy of subducted basaltic crust (MORB) from 25 to 37 GPa, and chemical heterogeneity of the lower mantle, Earth Planet. Sci. Lett., 190, 57-63.
31. Ono, S., Y. Ohishi, M. Isshiki, and T. Watanuki (2005), In situ X-ray observations of phase assemblages in peridotite and basalt compositions at lower mantle conditions: Implications for density of subducted oceanic plate, J. Geophys. Res., 110, B02208, doi:10.1029/2004JB003196. (Pubitemid 40763095)
32. Pollack, H. N., S. J. Hunter, and R. Johnston (1993), Heat loss from the Earth's interior: Analysis of the global data set, Rev. Geophys, 31, 267-280.
33. Stegman, D. R., A.M. Jellinek, S.A. Zatman, J. R. Baugardner, and M. A. Richards (2003), An early lunar core dynamo driven by thermo-chemical mantle convection, Nature, 421, 143-146.
34. Tackley, P. J. (1997), Effects of phase transitions on three-dimensional mantle convection, in The Fluid Mechanics of Astrophysics and Geophysics, vol.5, The Doornbos Volume, edited by D. Crossley, pp. 273-336, Gordon and Breach, New York.
35. Tackley, P. J. (1998), Three-dimensional simulations of mantle convection with a thermo-chemical basal boundary layer: D"?, in The Core-Mantle Boundary Region, Geodyn. Ser., vol. 28, edited by M. Gurnis et al., pp. 231-253, AGU, Washington, D. C.
36. Tackley, P. J., and S. Xie (2003), STAG3D: A code for modeling thermo-chemical multiphase convection in Earth's mantle, paper presented at Second MIT Conference on Computational Fluid and Solid Mechanics, Cambridge, Mass.
37. Tackley, P. J., D. J. Stevenson, G. A. Glatzmaier, and G. Schubert (1994), Effects of multiple phase transitions in a three-dimensional spherical model of convection in Earth's mantle, J. Geophys. Res., 99(B8), 15,877-15,902.
38. Thomas, C., E. J. Garnero, and T. Lay (2004a), High-resolution imaging of lowermost mantle structure under the Cocos plate, J. Geophys. Res., 109, B08307, doi:10.1029/2004JB003013. (Pubitemid 39428441)
39. Thomas, C., J. Kendall, and J. Lowman (2004b), Lower-mantle seismic discontinuities and the thermal morphology of subducted slabs, Earth Planet. Sci. Lett., 225, 105-113.
40. Tozer, D. C. (1972), The present thermal state of the terrestrial planets, Phys. Earth Planet. Inter., 6, 182-197.
41. Tsuchiya, T., J. Tsuchiya, K. Umemoto, and R. M. Wentzcovitch (2004), Phase transition in MgSiO3 perovskite in the Earth's lower mantle, Earth Planet. Sci. Lett., 224, 241-248.
42. van Keken, P. E. (2001), Cylindrical scaling for dynamical cooling model of the Earth, Phys. Earth Planet. Inter., 124, 119-130.
43. Weidner, D. J., and Y. Wang (1998), Chemical and Clapeyron-induced buoyancy at the 660 km discontinuity, J. Geophys. Res., 103, 7431-7441.
44. Xie, S., and P. J. Tackley (2004a), Evolution of helium and argon isotopes in a convecting mantle, Phys. Earth Planet. Inter., 146, 417-439.
45. Xie, S., and P. J. Tackley (2004b), Evolution of U-Pb and Sm-Nd systems in numerical models of mantle convection and plate tectonics, J. Geophys. Res., 109, B11204, doi:10.1029/2004JB003176. (Pubitemid 40294838)