Seismic evidence for deep low-velocity anomalies in the transition zone beneath West Antarctica

Earth and Planetary Science Letters

Volumn 216, Issue 4, 2003, Pages 645-661

  Sieminski, Anne ^a   Debayle, Eric ^a   Lévêque, Jean Jacques ^a  

^a UNIVERSITÉ DE STRASBOURG   (France)

Author keywords

Antarctica; Plume; Surface waves; Tomography; Upper mantle

Indexed keywords

LOW VELOCITY ZONE; SEISMIC TOMOGRAPHY; SEISMIC VELOCITY; SURFACE WAVE; TRANSITION ZONE; UPPER MANTLE;

ANTARCTICA; WEST ANTARCTICA;

EID: 0347577878     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(03)00518-1     Document Type: Article

References (40)

1. Dalziel, I. W., & Elliot, D. H. (1982). West Antarctica: problem child of Gondwanaland. Tectonics, 1 3-19.
2. Roult, G., & Rouland, D. (1994). Antarctica I: Deep structure investigations inferred from seismology; a review. Phys. Earth Planet. Inter., 84 15-32.
3. Cande, S. C., Stock, J. M., Müller, R. D., & Ishihara, T. (2000). Cenozoic motion between East and West Antarctica. Nature, 404 145-150.
4. Wörner, G. (1999). Lithospheric dynamics and mantle sources of alkaline magmatism of the Cenozoic West Antarctic Rift System. Glob. Plan. Chan., 23 61-77.
5. Behrendt, J. C., LeMasurier, W. E., Cooper, A. K., Tessensohn, F., Tréhu, A., & Damaske, D. (1991). Geophysical studies of the West Antarctic Rift System. Tectonics, 10 1257-1273.
6. Ritzwoller, M. H., Shapiro, N. M., Levshin, A. L., & Leahy, G. M. (2001). Crustal and upper mantle structure beneath Antarctica and surrounding oceans. J. Geophys. Res., 106 30645-30670.
7. Hart, S. R., Blusztajn, J., LeMasurier, W. E., & Rex, D. C. (1997). Hobbs Coast Cenozoic volcanism: Implication for the West Antarctic rift system. Chem. Geol., 139 223-248.
8. LeMasurier, W. E., & Landis, C. A. (1996). Mantle-plume activity recorded by low-relief erosion surfaces in West Antarctica and New Zealand. GSA Bull., 108 1450-1466.
9. J.C. Behrendt, W.E. LeMasurier, A.K. Cooper, The West Antarctic Rift System - A propagating rift 'captured' by a mantle plume?, in: Y. Yoshida, K. Kaminuma, K. Shiraishi (Eds.), Recent Progress in Antarctic Earth Science, Terra Sci., Tokyo, 1992, pp. 315-322.
10. Storey, B. C. (1995). The role of mantle plumes in continental breakup: case histories from Gondwanaland. Nature, 377 301-308.
11. Zhang, Y. -S, & Tanimoto, T. (1993). High-resolution global upper mantle structure and plate tectonics. J. Geophys. Res., 98 9793-9823.
12. Ritsema, J., & van Heijst, H. J. (2000). Seismic imaging of structural heterogeneity in Earth's mantle: Evidence for large-scale mantle flow. Sci. Prog., 83 243-259.
13. Roult, G., Rouland, D., & Montagner, J. P. (1994). Antarctica II: Upper-mantle structure from velocities and anisotropy. Phys. Earth Planet. Inter., 84 33-57.
14. Danesi, S., & Morelli, A. (2000). Group velocity of Rayleigh waves in the Antarctic region. Phys. Earth Planet. Inter., 122 55-66.
15. Danesi, S., & Morelli, A. (2001). Structure of the upper mantle under the Antarctic Plate from surface wave tomography. Geophys. Res. Lett., 28 4395-4398.
16. Debayle, E. (1999). SV-wave azimuthal anisotropy in the Australian upper-mantle: preliminary results from automated Rayleigh waveform inversion. Geophys. J. Int., 137 747-754.
17. Cara, M., & Lévêque, J. J. (1987). Waveform inversion using secondary observables. Geophys. Res. Lett., 14 1046-1049.
18. Debayle, E., Lévêque, J. J., & Cara, M. (2001). Seismic evidence for a deeply rooted low-velocity anomaly in the upper mantle beneath the northeastern Afro/Arabian continent. Earth Planet. Sci. Lett., 193 423-436.
19. Debayle, E., & Lévêque, J. J. (1997). Upper mantle heterogeneities in the Indian Ocean from waveform inversion. Geophys. Res. Lett., 24 245-248.
20. Debayle, E., & Kennett, B. L. (2000). The Australian continental upper mantle: Structure and deformation inferred from surface waves. J. Geophys. Res., 105 25423-25450.
21. K. Priestley, E. Debayle, Seismic evidence for a moderately thick lithosphere beneath the Siberian Platform, Geophys. Res. Lett. 30 (2003) 1118,
22. S. Pilidou, O. Gudmundsson, E. Debayle, K. Priestley, Upper mantle SV-wavespeed heterogeneity beneath the north Atlantic, EOS Trans. Am. Geophys. Union 83 (47) (2002), Fall Meet. Suppl. F1040.
23. Lévêque, J. J., Cara, M., & Rouland, D. (1991). Waveform inversion of surface wave data: test of a new tool for systematic investigation of upper mantle structures. Geophys. J. Int., 104 565-581.
24. Dziewonski, A. M., & Anderson, D. L. (1981). Preliminary reference Earth model. Earth Planet. Inter., 25 297-356.
25. Nataf, H. C., & Ricard, Y. (1995). 3SMAC: an a priori tomographic model of the upper mantle based on geophysical modeling. Phys. Earth Planet. Inter., 95 101-122.
26. Montagner, J. P. (1986). Regional three-dimensional structures using long-period surface waves. Ann. Geophys., 4 283-294.
27. Nishimura, C. E., & Forsyth, D. W. (1989). The anisotropic structure of the upper mantle in the Pacific. Geophys. J., 96 203-229.
28. Lévêque, J. J., Debayle, E., & Maupin, V. (1998). Anisotropy in the Indian Ocean upper mantle from Rayleigh- and Love-waveform inversion. Geophys. J. Int., 133 529-540.
29. Ritsema, J., van Heijst, H. J., & Woodhouse, J. H. (1999). Complex shear wave velocity structure imaged beneath Africa and Iceland. Science, 286 1925-1928.
30. Forsyth, D. W., Ehrenbard, R. L., & Chapin, S. (1987). Anomalous upper mantle beneath the Australian-Antarctic Discordance. Earth Planet. Sci. Lett., 84 471-478.
31. Kuo, B. -Y, Chen, C. -H, & Zhang, Y. -S (1996). A fast velocity anomaly to the west of the Australian-Antarctic Discordance. Geophys. Res. Lett., 23 2239-2242.
32. Müller, R. D., Roest, W. R., Royer, J. -Y, Gahagan, L. M., & Scalter, J. G. (1997). Digital isochrons of the world's ocean floor. J. Geophys. Res., 102 3211-3214.
33. Shapiro, N. M., & Ritzwoller, M. H. (2002). Monte-Carlo inversion for a global shear-velocity model of the crust and upper mantle. Geophys. J. Int., 151 88-105.
34. Kennett, B. L., Engdhal, E. R., & Buland, R. (1995). Constraints on seismic velocities in the Earth from traveltimes. Geophys. J. Int., 122 108-124.
35. Griffiths, R. W., & Campbell, I. H. (1990). Stirring and structure in mantle starting plume. Earth Planet. Sci. Lett., 99 66-78.
36. Duncan, R. A., & Richards, M. A. (1991). Hotspots, mantle plumes, flood basalts, and true polar wander. Rev. Geophys., 29 31-50.
37. Davaille, A. (1999). Simultaneous generation of hotspots and superswells by convection in a heterogeneous planetary mantle. Nature, 402 756-760.
38. Anderson, D. L., Tanimoto, T., & Zhang, Y. -S (1992). Plate tectonics and hotspots: The third dimension. Science, 256 1645-1651.
39. Phipps Morgan, J., Morgan, W. J., Zhang, Y. -S, & Smith, W. H. (1995). Observational hints for a plume-fed, suboceanic asthenosphere and its role in mantle convection. J. Geophys. Res., 100 12753-12767.
40. Wessel, P., & Smith, W. H. (1995). New version of the Generic Mapping Tools released. EOS Trans. Am. Geophys. Union, 76 329.