Effects of depth-dependent viscosity and plate motions on maintaining a relatively uniform mid-ocean ridge basalt reservoir in whole mantle flow

Journal of Geophysical Research: Solid Earth

Volumn 107, Issue 6, 2002, Pages

  Stegman, Dave R ^a   Richards, Mark A ^a   Baumgardner, John R ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b LOS ALAMOS NATIONAL LABORATORY   (United States)

Author keywords

Core mantle boundary region; Mantle mixing

Indexed keywords

CORE-MANTLE BOUNDARY; HOMOGENEITY; MANTLE CONVECTION; MID-OCEAN RIDGE BASALT; PLATE MOTION; TRACE ELEMENT; VISCOSITY;

EID: 0037054691     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: None     Document Type: Article

References (41)

1. Baumgardner, J. R., Three-dimensional finite element model for mantle convection, Ph.D. thesis, Univ. of Calif., Los Angeles, 1985.
2. Blichert-Toft, I., F. A. Frey, and F. Albarede, Hf isotope evidence for pelagic sediments in the source of Hawaiian basalts, Science, 285, 879-882, 1999.
3. Bunge, H. P., and J. R. Baumgardner, Mantle convection modeling on parallel virtual machines, Comput. Phys., 9, 207-215, 1995.
4. 8 Rayleigh number: Effects of depth-dependent viscosity, heating mode, and an endothermic phase change, J. Geophys. Res., 102, 11,991-12,007, 1997.
5. Chase, C. G., Oceanic island Pb: Two-stage histories and mantle evolution, Earth Planet. Sci. Lett., 52, 277-284, 1981.
6. Christensen, U., Mixing by time-dependent convection, Earth Planet. Sci. Lett., 95, 382-394, 1989.
7. Christensen, U., and A. W. Hofmann, Segregation of subducted oceanic crust in the convecting mantle, J. Geophys. Res., 99, 19,867-19,884, 1994.
8. Coltice, N., and Y. Ricard, Geochemical observations and one layer mantle convection, Earth Planet. Sci. Lett., 174, 125-137, 1999.
9. Davies, G. F., Penetration of plates and plumes through the mantle transition zone, Earth Planet. Sci. Lett., 133, 507-516, 1995.
10. Davies, G. F., and M. A. Richards, Mantle convection, J. Geol., 100, 151-206, 1992.
11. DePaolo, D. J., Neodymium Isotope Geochemistry: An Introduction, p. 73, Springer-Verlag, New York, 1988.
12. Ferrachat, S., and Y. Ricard, Regular vs. chaotic mantle mixing, Earth Planet. Sci. Lett., 171, 75-86, 1998.
13. Grand S. P., R. D. van der Hilst, and S. Widiyantoro, Global seismic tomography: A snapshot of convection in the Earth, GSA Today, 7, 1-7, 1997.
14. Gurnis M., Stirring and mixing in the mantle by plate-scale flow: Large persistent blobs and long tendrils coexist, Geophys. Res. Lett., 13, 1474-1477, 1986.
15. Gurnis, M., and G. F. Davies, The effect of depth-dependent viscosity on convective mixing in the mantle and the possible survival of primitive mantle, Geophys. Res. Lett., 13, 541-544, 1986a.
16. Gurnis, M., and G. F. Davies, Numerical study of high Rayleigh number convection in a medium with depth-dependent viscosity, Geophys. J. Int., 85, 523-541, 1986b.
17. Hager, B. H., and R. J. O'Connell, Kinematic models of large-scale flow in the Earth's mantle, J. Geophys. Res., 84, 1031-1048, 1979.
18. Hofmann, A. W., Mantle geochemistry: The message from oceanic volcanism, Nature, 385, 219-229, 1997.
19. Hofmann, A. W., and W. M. White, Mantle plumes from ancient oceanic crust, Earth Planet. Sci. Lett., 57, 421-436, 1982.
20. Karason, H., and R. D. van der Hilst, Constraints on mantle convection from seismic tomography, in The History and Dynamics of Global Plate Motions, Geophys. Monogr. Ser., vol. 121, edited by M. A. Richards, R. G. Gordon, and R. D. van der Hilst, pp. 277-288, AGU, Washington, D.C., 2000.
21. Kellogg, L. H., and C. A. Stewart, Mixing by chaotic convection in an infinite Prandtl number fluid and implications for mantle convection, Phys. Fluids, 3, 1374-1378, 1991.
22. Lithgow-Bertelloni, C., and M. A. Richards, The dynamics of Cenozoic and Mesozoic plate motions, Rev. Geophys., 36, 27-78, 1998.
23. Megnin, C., H.-P. Bunge, B. Romanowicz, and M. A. Richards, Imaging 3-D spherical convection models: What can seismic tomography tell us about mantle dynamics?, Geophys. Res. Lett., 24, 1299-1302, 1997.
24. Metcalfe, G., C. R. Bina, and J. M. Ottino, Kinematic considerations for mantle mixing, Geophys. Res. Lett., 22, 743-746, 1995.
25. Mitrovica, J. X., and W. R. Peltier, Constraints on mantle viscosity based upon the inversion of post-glacial uplift data from the Hudson Bay region, Geophys. J. Int., 122, 353-377, 1995.
26. Olson, P., D. A. Yuen, and D. Balsiger, Convective mixing and the fine structure of mantle heterogeneity, Phys. Earth Planet. Inter., 36, 291-304, 1984.
27. Ricard, Y., M. Richards, C. Lithgow-Bertelloni, and Y. Le Stunff, A geodynamical model of mantle density heterogeneity, J. Geophys. Res., 98, 21,895-21,909, 1993.
28. Richards, M. A., Hotspots and the case for a high-viscosity lower mantle, in Glacial Isostasy, Sea Level and Mantle Rheology, edited by R. Sabadini and K. Lambeck, pp. 571-588, Kluwer Acad., Norwell, Mass., 1991.
29. Richards, M. A., and B. H. Hager, Geoid anomalies in a dynamic Earth, J. Geophys. Res., 89, 5987-6002, 1984.
30. Richter, F. M., S. F. Daly, and H.-C. Nataf, A parameterized model for the evolution of isotopic heterogeneities in a convecting system, Earth Planet. Sci. Lett., 60, 178-194, 1982.
31. Schmalzl, J., and U. Hansen, Mixing in the Earth's mantle by thermal convection: A scale-dependent phenomenon, Geophys. Res. Lett., 21, 987-990, 1994.
32. Schmalzl, J., G. A. Houseman, and U. Hansen, Mixing in vigorous, time-dependent three-dimensional convection and application to the Earth's mantle, J. Geophys. Res., 101, 21,847-21,858, 1996.
33. Spence, D. A., J. R. Ockendon, P. Wilmott, D. L. Turcotte, and L. H. Kellogg, Convection mixing in the mantle: The role of viscosity differences, Geophys. J., 95, 79-86, 1988.
34. Tackley, P. J., Three-dimensional simulations of mantle convection with a thermochemical 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., 1998.
35. Tackley, P. J., Mantle convection and plate tectonics: Toward an integrated physical and chemical theory, Science, 288, 2002-2007, 2000.
36. Ten, A., D. A. Yuen, T. B. Larsen, and A. V. Malevsky, The evolution of material surfaces in convection with variable viscosity as monitored by a characteristics-based method, Geophys. Res. Lett., 23, 2001-2004, 1996.
37. Ten, A., D. A. Yuen, Y. Y. Podladchikov, T. B. Larsen, E. Pachepsky, and A. V. Malevsky, Fractal features in mixing of non-Newtonian and Newtonian mantle convection, Earth Planet. Sci. Lett., 146, 401-414, 1997.
38. van der Hilst, R. D., S. Widiyantoro, and E. R. Engdahl, Evidence for deep mantle circulation from global tomography, Nature, 386, 578-584, 1997.
39. van Keken, P., and S. J. Zhong, Mixing in a 3-D spherical model of present-day mantle convection, Earth Planet. Sci. Lett., 171, 533-547, 1999.
40. Walzer, U., and R. Hendel, A new convection-fractionation model for the evolution of principal geochemical reservoirs of the Earth's mantle, Phys. Earth Planet. Inter., 112, 211-256, 1999.
41. White, W. M., Sources of Oceanic basalts: Radiogenic isotope evidence, Geology, 13, 115-118, 1985.