Geodynamic and seismic constraints on the thermochemical structure and dynamics of convection in the deep mantle

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

Volumn 360, Issue 1800, 2002, Pages 2521-2543

  Forte, Alessandro M ^a   Mitrovica, Jerry X ^a   Espesset, Aude ^a  

^a UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

Geodynamics; Mantle convection; Mantle viscosity; Seismic tomography; Thermochemical anomalies; Three dimensional (3D) structure

Indexed keywords

ASTRONOMY; COMPUTER SIMULATION; CONFERENCE PAPER; DISASTER; ELASTICITY; FLOW KINETICS; GEOLOGY; METHODOLOGY; REPRODUCIBILITY; SEDIMENT; SENSITIVITY AND SPECIFICITY; THEORETICAL MODEL; THERMODYNAMICS; THREE DIMENSIONAL IMAGING; TOMOGRAPHY; VIBRATION; VISCOSITY;

COMPUTER SIMULATION; CONVECTION; EARTH (PLANET); ELASTICITY; EVOLUTION, CHEMICAL; EVOLUTION, PLANETARY; GEOLOGIC SEDIMENTS; GEOLOGY; IMAGING, THREE-DIMENSIONAL; MODELS, THEORETICAL; NATURAL DISASTERS; REPRODUCIBILITY OF RESULTS; RHEOLOGY; SENSITIVITY AND SPECIFICITY; THERMODYNAMICS; TOMOGRAPHY; VIBRATION; VISCOSITY;

EID: 0037111731     PISSN: 1364503X     EISSN: None     Source Type: Journal    
DOI: 10.1098/rsta.2002.1079     Document Type: Conference Paper

References (84)

1. Albarède, F. 1998 Time-dependent models of U-Th-He and K-Ar evolution and the layering of mantle convection. Chem. Geol. 145, 413-429.
2. Albarède, F. & van der Hilst, R. D. 1999 New mantle convection model may reconcile conflicting evidence. Eos 80, 537-539.
3. Allègre, C. J. 2002 The evolution of mantle mixing. Phil. Trans. R. Soc. Lond. A 360, 2411-2431.
4. Allègre, C. J. & Lewin, E. 1995 Isotopic systems and stirring times of the Earth's mantle. Earth Planet. Sci. Lett. 136, 629-646.
5. Allègre, C. J., Hofmann, A. W. & O'Nions, R. K. 1996 The argon constraints on mantle structure. Geophys. Res. Lett. 23, 3555-3557.
6. Becker, T. W. & Boschi, L. 2002 A comparison of tomographic and geodynamic mantle models. Geochem. Geophys. Geosyst. 3, 2001GC000168. (Available online at http://g-cubed.org/.)
7. Becker, T. W., Kellogg, J. B. & O'Connell, R. J. 1999 Thermal constraints on the survival of primitive blobs in the lower mantle. Earth Planet. Sci. Lett. 171, 351-365.
8. Bijwaard, H., Spakman, W. & Engdahl, E. R. 1998 Closing the gap between regional and global travel time tomography. J. Geophys. Res. 103, 30055-30078.
9. Boehler, R. 1996 Melting temperature of the Earth's mantle and core: Earth's thermal structure. A. Rev. Earth Planet. Sci. 24, 15-40.
10. Brazier, R. A., Nyblade, A. A., Langston, C. A. & Owens, T. J. 2000 On wave velocities beneath the Tanzania craton and adjacent rifted mobile belts, East Africa. Geophys. Res. Lett. 27, 2365-2368.
11. Brodholt, J. P. 2000 Pressure-induced changes in the compression mechanism of aluminous perovskite in the Earth's mantle. Nature 407, 620-622.
12. Bunge, H.-P. & Richards, M. A. 1996 The origin of large scale structure in mantle convection: Effects of plate motions and viscosity stratification. Geophys. Res. Lett. 23, 2987-2990.
13. Čadek, O., Yuen, D. A., Steinbach, V., Chopelas, A. & Matyska, C. 1994 Lower mantle thermal structure deduced from seismic tomography, mineral physics and numerical modelling. Earth Planet. Sci. Lett. 121, 385-402.
14. Chevrot, S., Vinnik, L. & Montagner, J.-P. 1999 Global-scale analysis of the mantle Pds. J. Geophys. Res. 104, 20203-20219.
15. Coltice, N. & Ricard, Y. 1999 Geochemical observations and one layer mantle convection. Earth Planet. Sci. Lett. 174, 125-137.
16. Corrieu, V., Ricard, Y. & Froidevaux, C. 1994 Converting mantle tomography into mass anomalies to predict the Earth's radial viscosity. Phys. Earth Planet. Inter. 84, 3-13.
17. Davaille, A. 1999 Simultaneous generation of hotspots and superswells by convection in a heterogeneous planetary mantle. Nature 402, 756-760.
18. De Mets, C. R., Gordon, R. G., Argus, D. F. & Stein, S. 1990 Current plate motions. Geophys. J. Int. 101, 425-478.
19. Deschamps, F., Snieder, R. & Trampert, J. 2001 The relative density-to-shear velocity scaling in the uppermost mantle. Phys. Earth Planet. Inter. 124, 193-212.
20. Dupré, B. & Allègre, C. J. 1983 Pb-Sr isotope variation in Indian Ocean basalts and mixing phenomena. Nature 303, 142-146.
21. Durek, J. & Ekström, G. 1996 A radial model of anelasticity consistent with long-period surface-wave attenuation. Bull. Seism. Soc. Am. 86, 144-158.
22. Dziewonski, A. M. & Anderson, D. L. 1981 Preliminary reference Earth model. Phys. Earth Planet. Inter. 25, 297-356.
23. Ekström, G. & Dziewonski, A. M. 1998 The unique anisotropy of the Pacific upper mantle. Nature 394, 168-172.
24. Espesset, A. 2001 Numerical Modelling of Time-dependent Thermal Convection in Earth's Mantle Constrained by Seismic Tomography and Geodynamic Data. MSc thesis, University of Western Ontario, London, Canada.
25. Forte, A. M. 2000 Seismic-geodynamic constraints on mantle flow: Implications for layered convection, mantle viscosity, and seismic anisotropy in the deep mantle. In Earth's deep interior: mineral physics and tomography from the atomic to the global scale (ed. S.-I. Karato et al.). Geophysical Monograph Series, vol. 117, pp. 3-36. Washington, DC: American Geophysical Union.
26. Forte, A. M. & Mitrovica, J. X. 1996 New inferences of mantle viscosity from joint inversion of long-wavelength mantle convection and post-glacial rebound data. Geophys. Res. Lett. 23, 1147-1150.
27. Forte, A. M. & Mitrovica, J. X. 2001 Deep-mantle high-viscosity flow and thermochemical structure inferred from seismic and geodynamic data. Nature 410, 1049-1056.
28. Forte, A. M. & Peltier, W. R. 1987 Plate tectonics and aspherical Earth structure: The importance of poloidal-toroidal coupling. J. Geophys. Res. 92, 3645-3679.
29. Forte, A. M. & Peltier, W. R. 1991 Viscous flow models of global geophysical observables. 1. Forward problems. J. Geophys. Res. 96, 20131-20159.
30. Forte, A. M. & Peltier, W. R. 1994 The kinematics and dynamics of poloidal-toroidal coupling in mantle flow: The importance of surface plates and lateral viscosity variations. Adv. Geophys. 36, 1-119.
31. Forte, A. M. & Perry, H. K. C. 2000 Geodynamic evidence for a chemically depleted continental tectonosphere. Science 290, 1940-1944.
32. Forte, A. M., Dziewonski, A. M. & Woodward, R. L. 1993 Aspherical structure of the mantle, tectonic plate motions, non-hydrostatic geoid, and topography of the core-mantle boundary. In Dynamics of the Earth's deep interior and Earth rotation (ed. J.-L. LeMouël, D. E. Smylie & T. Herring). Geophysical Monograph Series, vol. 72, pp. 135-166. Washington, DC: American Geophysical Union.
33. Gable, C. W., O'Connell, R. J. & Travis, B. J. 1991 Convection in three dimensions with surface plates. J. Geophys. Res. 96, 8391-8405.
34. Gaboret, C., Forte, A. M. & Montagner, J. 2001 The unique dynamics of the Pacific hemisphere mantle and its signature on seismic anisotropy. Eos 82(47), Fall Meeting Supplement.
35. Grand, S. P. 2001 The implications for mantle flow from global seismic tomography. In Integrated models of Earth structure and evolution, AGU Virtual Spring Meeting, 20 June 2001. (Available online at http://www.agu.org/meetings/umeeting/.)
36. Grand, S. P., van der Hilst, R. D. & Widiyantoro, S. 1997 Global seismic tomography: A snapshot of convection in the Earth. GSA Today 7, 1-7.
37. Gurnis, M., Wysession, M. E., Knittle, E. & Buffett, B. A. (eds) 1998 The core-mantle boundary region. Geodynamics Series, vol. 28. Washington, DC: American Geophysical Union.
38. Gurnis, M., Mitrovica, J. X., Ritsema, J. & van Heijst, H. J. 2000 Constraining mantle density structure using geological evidence of surface uplift rates: The case of the African superplume. Geochem. Geophys. Geosyst. 1, 1999GC000035. (Available online at http://g-cubed.org/.)
39. Hager, B. H. & Clayton, R. W. 1989 Constraints on the structure of mantle convection using seismic observations, flow models, and the geoid. In Mantle convection: Plate Tectonics and Global Dynamics (ed. W. R. Peltier), pp. 657-763. New York: Gordon & Breach.
40. Hager, B. H. & O'Connell, R. J. 1981 A simple global model of plate dynamics and mantle convection. J. Geophys. Res. 86, 4843-4867.
41. Hart, S. R. 1988 Heterogeneous mantle domains: Signatures, genesis and mixing chronologies. Earth Planet. Sci. Lett. 90, 273-296.
42. Helffrich, G. R. & Wood, B. J. 2001 The Earth's mantle. Nature 412, 501-507.
43. Hofmann, A. W. 1997 Mantle geochemistry: The message from oceanic volcanism. Nature 385, 219-229.
44. Jackson, I. 1998 Elasticity, composition and temperature of the Earth's lower mantle: A reappraisal. Geophys. J. Int. 134, 291-311.
45. Jackson, I., Fitz Gerald, J., Faul, U. & Tan, B. 2000 Seismic wave attenuation in olivine: Quantification of grainsize sensitivity and the influence of partial melting. Eos 81(48), Fall Meeting Supplement.
46. Jarvis, G. T. & Peltier, W. R. 1986 Lateral heterogeneity in the convecting mantle. J. Geophys. Res. 91, 435-451.
47. Karato, S.-I. 1993 Importance of anelasticity in the interpretation of seismic tomography. Geophys. Res. Lett. 20, 1623-1626.
48. Karato, S.-I. 1998 A dislocation model of seismic wave attenuation and micro-creep in the Earth. Pure Appl. Geophys. 153, 239-256.
49. Karato, S.-I. & Spetzler, H. A. 1990 Defect microdynamics in minerals and solid-state mechanisms of seismic wave attenuation and velocity dispersion and velocity dispersion in the mantle. Rev. Geophys. 28, 399-421.
50. Kellogg, L. H., Hager, B. H. & van der Hilst, R. D. 1999 Compositional stratification in the deep mantle. Science 283, 1881-1884.
51. Kennett, B. L. N., Widiyantoro, S. & van der Hilst, R. D. 1998 Joint seismic tomography for bulk-sound and shear wavespeed in the Earth's mantle, J. Geophys. Res. 103, 12469-12493.
52. Lithgow-Bertelloni, C. & Silver, P. G. 1998 Dynamic topography, plate driving forces and the African superswell. Nature 395, 269-272.
53. McNutt, M. K. & Judge, A. V. 1990 The Superswell and mantle dynamics beneath the South Pacific. Science 248, 969-975.
54. Manga, M. 1996 Mixing of heterogeneities in the mantle: Effects of viscosity differences. Geophys. Res. Lett. 23, 403-406.
55. Marsh, J. G. (and 15 others) 1990 The GEM-T2 gravitational model. J. Geophys. Res. 95, 22043-22071.
56. Masters, G., Laske, G., Bolton, H. & Dziewonski, A. M. 2000 The relative behaviour of shear velocity, bulk sound speed, and compressional velocity in the mantle: Implications for chemical and thermal structure. In Earth's deep interior: mineral physics and tomography from the atomic to the global scale (ed. S.-I. Karato et al.). Geophysical Monograph Series, vol. 117, pp. 63-87. Washington, DC: American Geophysical Union.
57. Mathews, P., Buffet, B. A. & Herring, T. A. 1999 What do nutations tell us about the Earth's interior? Eos 80, 19. Fall Meeting Supplement.
58. Mégnin, C. & Romanowicz, B. 2000 The three-dimensional shear velocity structure of the mantle from the inversion of body, surface and higher-mode waveforms. Geophys. J. Int. 143, 709-728.
59. Mitrovica, J. X. & Forte, A. M. 1997 Radial profile of mantle viscosity: Results from the joint inversion of convection and post-glacial rebound observables. J. Geophys. Res. 102, 2751-2769.
60. Mitrovica, J. X. & Forte, A. M. 2002 On the radial profile of mantle viscosity. In Ice sheets; sea levels and the dynamic Earth (ed. J. X. Mitrovica & L. L. A. Vermeersen). Geodynamics Series, vol. 29. Washington, DC: American Geophysical Union.
61. Nyblade, A. A., Knox: R. P. & Gurrola, H. 2000 Mantle transition zone thickness beneath Afar: Implications for the origin of the Afar hotspot. Geophys. J. Int. 142, 615-619.
62. 3 perovskite at pressures and temperatures of the Earth's mantle. Nature 411, 934-937.
63. O'Nions, R. K. & Tolstikhin, I. N. 1996 Limits on the mass flux between lower and upper mantle and stability of layering. Earth Planet. Sci. Lett. 139, 213-222.
64. Panasyuk, S. V. & Hager, B. H. 2000 Inversion for mantle viscosity profiles constrained by dynamic topography and the geoid, and their estimated errors. Geophys. J. Int. 143, 821-836.
65. Pari, G. 2001 Crust 5.1-based inference of the Earth's dynamic surface topography: Geodynamic implications. Geophys. J. Int. 144, 501-516.
66. Ricard, Y. & Vigny, C. 1989 Mantle dynamics with induced plate tectonics. J. Geophys. Res. 94, 17543-17559.
67. Richards, M. A. & Hager, B. H. 1984 Geoid anomalies in a dynamic Earth. J. Geophys. Res. 89, 5987-6002.
68. Ritsema, J., van Heijst, H. J. & Woodhouse, J. H. 1999 Complex shear velocity structure imaged beneath Africa and Iceland. Science 286, 1925-1928.
69. Sidorin, I., Gurnis, M. & Helmberger, D. V. 1999 Evidence for a ubiquitous seismic discontinuity at the base of the mantle. Science 286, 1326-1331.
70. Sobolev, S. V., Zeyen, H., Granet, M., Achauer, U., Bauer, C., Werling, F., Altherr, R. & Fuchs, K. 1997 Upper mantle temperatures and lithosphere-asthenosphere system beneath the French Massif Central constrained by seismic, gravity, petrologic and thermal observations. Tectonophysics 275, 143-164.
71. Stacey, F. D. 1992 Physics of the Earth, 3rd Edn. Brisbane: Brookfield Press.
72. Stacey, F. D. 1998 Thermoelasticity of a mineral composite and a reconsideration of lower mantle properties. Phys. Earth Planet. Inter. 106, 219-236.
73. Stixrude, L. & Lithgow-Bertelloni, C. 2001 The origin of lateral heterogeneity in the mantle. In Integrated models of Earth Structure and Evolution, AGU Virtual Spring Meeting, 20 June 2001 Meeting. (Available online at http://www.agu.org/meetings/umeeting/.)
74. Su, W. & Dziewonski, A. M. 1997 Simultaneous inversion for 3D variations in shear and bulk velocity in the mantle. Phys. Earth Planet. Inter. 100, 135-156.
75. Tackley, P. J. 1998 Three-dimensional simulations of mantle convection with a thermochemical basal layer: D″? In The core-mantle boundary region (ed. M. Gurnis et al.). Geodynamics Series, vol. 28, pp. 231-253. Washington, DC: American Geophysical Union.
76. Tackley, P. J. 2000 Mantle convection and plate tectonics: Toward an integrated physical and chemical theory. Science 288, 2002-2007.
77. Trampert, J., Vacher, P. & Vlaar, N. 2001 Sensitivities of seismic velocities to temperature, pressure and composition in the lower mantle. Phys. Earth Planet. Inter. 124, 255-267.
78. van Keken, P. & Ballentine, C. J. 1998 Whole-mantle versus layered mantle convection and the role of a high-viscosity lower mantle in terrestrial volatile evolution. Earth Planet. Sci. Lett. 156, 19-32.
79. van Keken, P. & Zhong, S. 1999 Mixing in a 3D spherical model of present-day mantle convection. Earth Planet. Sci. Lett. 171, 533-547.
80. van der Hilst, R. D. & Kárason, K. 1999 Composition heterogeneity in the bottom 1000 kilometers of Earth's mantle: Toward a hybrid convection model. Science 283, 1885-1888.
81. van der Hilst, R. D., Widiyantoro, S. & Engdahl, E. R. 1997 Evidence for deep mantle circulation from global tomography. Nature 386, 578-584.
82. P of the lower mantle. Pure Appl. Geophys. 146, 533-549.
83. Weertman, J. & Weertman, J. R. 1975 High temperature creep of rock and mantle viscosity. A. Rev. Earth Planet. Sci. 3, 293-315.
84. Zhang, J. & Weidner, D. J. 1999 Thermal equation of state of aluminum-enriched silicate perovskite. Science 284, 782-784.