Frozen and active seismic anisotropy beneath southern Africa

Geophysical Research Letters

Volumn 39, Issue 8, 2012, Pages

  Vinnik, L ^a   Kiselev, S ^a   Weber, M ^b,c   Oreshin, S ^a   Makeyeva, L ^a  

^a SCHMIDT INSTITUTE OF PHYSICS OF THE EARTH   (Russian Federation)

^b GFZ GERMAN RESEARCH CENTRE FOR GEOSCIENCES   (Germany)

^c UNIVERSITY OF POTSDAM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

OLIVINE;

410-KM DISCONTINUITY; ACTIVE SEISMIC; ARCHEAN; AZIMUTHAL ANISOTROPY; DEPTH DEPENDENCE; PLATE MOTIONS; RECEIVER FUNCTIONS; UPPER MANTLE; UPPERMOST MANTLE; WAVE FORMS;

ANISOTROPY;

DATA INVERSION; DISCONTINUITY; PLATE MOTION; SEISMIC ANISOTROPY; UPPER MANTLE; WAVE VELOCITY; WAVEFORM ANALYSIS;

SOUTHERN AFRICA;

EID: 84859846439     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2012GL051326     Document Type: Article

References (35)

1. Becker, T. W., S. Chevrot, V. Schulte-Pelkum, and D. K. Blackmann (2006), Statistical properties of seismic anisotropy predicted by upper mantle geodynamic models, J. Geophys. Res., 111, B08309, doi:10.1029/2005JB004095.
2. Ben-Ismail, W., G. Barruol, and D. Mainprice (2001), The Kaapvval craton seismic anisotropy: Petrophysical analyses of upper mantle kimberlite nodules, Geophys. Res. Lett., 28(13), 2497-2500, doi:10.1029/2000GL012419. (Pubitemid 32704427)
3. Biswas, N. N. (1972), Earth-flattening procedure for the propagation of Rayleigh wave, Pure Appl. Geophys., 96, 61-74, doi:10.1007/BF00875629.
4. de Wit, M. J., et al. (1992), Formation of an Archean continent, Nature, 357(6379), 553-562, doi:10.1038/357553a0.
5. Dziewonski, A., and D. Anderson (1981), Preliminary reference Earth model, Phys. Earth Planet. Inter., 25(4), 297-356, doi:10.1016/0031-9201(81) 90046-7.
6. Estey, L. H., and B. J. Douglas (1986), Upper-mantle anisotropy: A preliminary model, J. Geophys. Res., 91, 11,393-11,406, doi:10.1029/ JB091iB11p11393.
7. Farra, V., and L. Vinnik (2000), Upper mantle stratification by P and S receiver functions, Geophys. J. Int., 141, 699-712, doi:10.1046/j.1365-246x. 2000.00118.x. (Pubitemid 30341980)
8. Forte, A. M., S. Quere, R. Moucha, N. A. Simmons, S. P. Grand, J. X. Mitrovica, and D. B. Rowly (2010), Joint seismic-geodynamic-mineral physical modeling of African geodynamics: A reconciliation of deep-mantle convection with surface geophysical constraints, Earth Planet. Sci. Lett., 295(3-4), 329-341, doi:10.1016/j.epsl.2010.03.017.
9. Fouch, M. J., and S. Rondenay (2006), Seismic anisotropy beneath stable continental interiors, Phys. Earth Planet. Inter., 158(2-4), 292-320, doi:10.1016/j.pepi.2006.03.024. (Pubitemid 44356353)
10. Girardin, N., and V. Farra (1998), Azimuthal anisotropy in the upper mantle from observations of P-to-S converted phases: Application to southern Australia, Geophys. J. Int., 133(3), 615-629, doi:10.1046/j.1365-246X.1998. 00525.x. (Pubitemid 28424609)
11. Hansen, S. E., A. A. Nyblade, J. Julia, P. H. G. M. Dirks, and R. J. Durrheim (2009), Upper-mantle low-velocity zone structure beneath the Kaap-vaal craton from S-wave receiver functions, Geophys. J. Int., 178(2), 1021-1027, doi:10.1111/j.1365-246X.2009.04178.x.
12. Hier-Majumder, S., and A. Courtier (2011), Seismic signature of small melt fraction atop the transition zone, Earth Planet. Sci. Lett., 308(3-4), 334-342, doi:10.1016/j.epsl.2011.05.055.
13. Holtzman, B. K., D. L. Kohlstedt, M. E. Zimmerman, F. Heidelbach, T. Hiraga, and J. Hustoft (2003), Melt segregation and strain partitioning: Implications for seismic anisotropy and mantle flow, Science, 301, 1227-1230, doi:10.1126/science.1087132. (Pubitemid 37052209)
14. James, D. E., F. R. Boyd, D. Schutt, D. R. Bell, and R. W. Carlson (2004), Xenolith constraints on seismic velocities in the upper mantle beneath southern Africa, Geochem. Geophys. Geosyst., 5, Q01002, doi:10.1029/ 2003GC000551.
15. Jones, M. Q. W. (1988), Heat flow in the Witwatersrand basins and environs and its significance for the South African shield geotherm and lithosphere thickness, J. Geophys. Res., 93(B4), 3243-3260, doi:10.1029/ JB093iB04p03243.
16. Kosarev, G. L., L. I. Makeyeva, E. F. Savarensky, and E. M. Chesnokov (1979), Influence of anisotropy beneath seismograph station on body waves [in Russian], Izv. Akad. Nauk Ser. Fiz. Zemli, 2, 26-37.
17. Kosarev, G. L., L. I. Makeyeva, and L. P. Vinnik (1984), Anisotropy of the mantle inferred from observations of P to SV converted waves, Geophys. J. R. Astron. Soc., 76, 209-220, doi:10.1111/j.1365-246X. 1984.tb05037.x.
18. Kuskov, O. L., and V. A. Kronrod (2007), Composition, temperature, and thickness of the lithosphere of the Archean Kaapvaal craton, Izv. Phys. Solid Earth, 43(1), 45-66.
19. Levin, V., and J. Park (1997), Crustal anisotropy in the Ural mountains foredeep from teleseismic receiver functions, Geophys. Res. Lett., 24, 1283-1286, doi:10.1029/97GL51321.
20. Li, A., and K. Burke (2006), Upper mantle structure of southern Africa from Rayleigh wave tomography, J. Geophys. Res., 111, B10303, doi:10.1029/2006JB004321. (Pubitemid 44932622)
21. Marone, F., and B. Romanowicz (2007), The depth distribution of azimuthal anisotropy in the continental upper mantle, Nature, 447, 198-201, doi:10.1038/nature05742. (Pubitemid 46763077)
22. Mosegaard, K., and P. D. Vestergaard (1991), A simulated annealing approach to seismic model optimization with sparse prior information, Geophys. Prospect., 39, 599-611, doi:10.1111/j.1365-2478.1991. tb00331.x. (Pubitemid 21681735)
23. Oreshin, S., L. Vinnik, L. Makeyeva, G. Kosarev, R. Kind, and F. Wenzel (2002), Combined analysis of SKS splitting and regional traveltimes in Siberia, Geophys. J. Int., 151(2), 393-402, doi:10.1046/j.1365-246X.2002.01791.x. (Pubitemid 35219056)
24. Priestley, K., D. McKenzie, and E. Debayle (2006), The state of the upper mantle beneath southern Africa, Tectonophysics, 416, 101-112, doi:10.1016/j.tecto.2005.11.024.
25. Saltzer, R. L., J. B. Gaherty, and T. S. Jordan (2000), How are vertical shear wave splitting measurements affected by variations in the orientation of azimuthal anisotropy with depth?, Geophys. J. Int., 141(2), 374-390, doi:10.1046/j.1365-246x.2000.00088.x. (Pubitemid 30309247)
26. Savage, M. K. (1999), Seismic anisotropy and mantle deformation: What have we learned from shear wave splitting?, Rev. Geophys., 37(1), 65-106, doi:10.1029/98RG02075. (Pubitemid 29284769)
27. Silver, P. G., S. S. Gao, and K. H. Liu, and the Kaapvaal Seismic Group (2001), Mantle deformation beneath southern Africa, Geophys. Res. Lett., 28(13), 2493-2496, doi:10.1029/2000GL012696. (Pubitemid 32706912)
28. Vinnik, L. (1977), Detection of waves converted from P to SV in the mantle. Phys. Earth Planet. Inter., 15, 39-45.
29. Vinnik, L., and V. Farra (2002), Subcratonic low-velocity layer and flood basalts, Geophys. Res. Lett., 29(4), 1049, doi:10.1029/2001GL014064.
30. Vinnik, L., and J.-P. Montagner (1996), Shear wave splitting in the mantle Ps phases, Geophys. Res. Lett., 23(18), 2449-2452, doi:10.1029/96GL02263.
31. Vinnik, L. P., L. I. Makeyeva, A. Milev, and A. Y. Usenko (1992), Global patterns of azimuthal anisotropy and deformations in the continental mantle, Geophys. J. Int., 111(3), 433-447, doi:10.1111/j.1365-246X. 1992.tb02102.x. (Pubitemid 23387736)
32. Vinnik, L. P., R. W. E. Green, and O. Nicolaysen (1995), Recent deformation of the deep continental root beneath southern Africa, Nature, 375, 50-52, doi:10.1038/375050a0.
33. Vinnik, L. P., I. M. Aleshin, S. G. Kiselev, G. L. Kosarev, and L. I. Makeyeva (2007), Depth localized azimuthal anisotropy from SKS and P receiver functions: The Tien Shan, Geophys. J. Int., 169(3), 1289-1299, doi:10.1111/j.1365-246X.2007.03394.x. (Pubitemid 46894907)
34. Vinnik, L., S. Oreshin, G. Kosarev, S. Kiselev, and L. Makeyeva (2009), Mantle anomalies beneath southern Africa: Evidence from seismic S and P receiver functions, Geophys. J. Int., 179(1), 279-298, doi:10.1111/j.1365-246X.2009. 04261.x.
35. Wang, Y., L. Wen, and D. Weidner (2008), Upper mantle SH-and P-velocity structures and compositional models beneath southern Africa, Earth Planet. Sci. Lett., 267(3-4), 596-608, doi:10.1016/j.epsl.2007.12.010.