Combined plate motion and density-driven flow in the asthenosphere beneath Saudi Arabia: Evidence from shear-wave splitting and seismic anisotropy

Geology

Volumn 34, Issue 10, 2006, Pages 869-872

  Hansen, Samantha ^a,b   Schwartz, Susan ^a   Al Amri, Abdullah ^c   Rodgers, Arthur ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

^c KING SAUD UNIVERSITY   (Saudi Arabia)

Author keywords

Anisotropy; Arabia; Continental rifting; Mantle flow; Red sea; Shear wave splitting

Indexed keywords

ASTHENOSPHERIC FLOW; CONTINENTAL RIFTING; MANTLE FLOW; SAUDI ARABIA; SEISMIC ANISOTROPY; SHEAR-WAVE SPLITTING; STRIKE SLIP MOTION;

LANDFORMS; SEISMOLOGY; SHEAR WAVES;

TECTONICS;

ASTHENOSPHERE; DENSITY CURRENT; MANTLE STRUCTURE; PLATE MOTION; RIFTING; S-WAVE; SEISMIC ANISOTROPY; WAVE SPLITTING;

ASIA; EURASIA; MIDDLE EAST; SAUDI ARABIA;

EID: 33750039152     PISSN: 00917613     EISSN: 00917613     Source Type: Journal    
DOI: 10.1130/G22713.1     Document Type: Article

References (36)

1. Al-Amri, M., and Al-Amri, A., 1999, Configuration of the seismographic networks in Saudi Arabia: Seismological Research Letters, v. 70, p. 322-331.
2. Al-Damegh, K., Sandvol, E., Al-Lazki, A., and Barazangi, M., 2004, Regional seismic wave propagation (Lg and Sn) and Pn attenuation in the Arabian plate and surrounding regions: Geophysical Journal International, v. 157, p. 775-795.
3. Altherr, R., Henjes-Kunst, E, Puchelt, H., and Baumann, A., 1990, Volcanic activity in the Red Sea axial trough - Evidence for a large mantle diapir: Tectonophysics, v. 150, p. 121-133.
4. Benoit, M., Nyblade, A., VanDecar, J., and Gurrola, H., 2003, Upper mantle P wave velocity structure and transition zone thickness beneath the Arabian Shield: Geophysical Research Letters, v. 30, doi: 10.1029/ 2002GL016436.
5. Bostock, M., and Cassidy, J., 1995, Variations in SKS splitting across western Canada: Geophysical Research Letters, v. 22, p. 5-8, doi: 10.1029/94GL02789.
6. Camp, V., and Roobol, M., 1992, Upwelling asthenosphere beneath western Arabia and its regional implications: Journal of Geophysical Research, v. 97, p. 15,255-15,271.
7. Daradich, A., Mitrovica, J., Pysklywec, R., Willett, S., and Forte, A., 2003, Mantle flow, dynamic topography, and rift-flank uplift of Arabia: Geology, v. 31, p. 901-904, doi: 10.1130/G19661.1.
8. Debayle, E., Lévêque, J., and Cara, M., 2001, Seismic evidence for a deeply rooted low-velocity anomaly in the upper mantle beneath the northeastern Afro/Arabian continent: Earth and Planetary Science Letters, v. 193 p. 423-436, doi: 10.1016/S0012-821X(01)00509-X.
9. Ebinger, C., and Sleep, N., 1998, Cenozoic magmatism throughout east Africa resulting from impact of a single plume: Nature, v. 395, p. 788-791, doi: 10.1038/27417.
10. Gao, S., Davis, P, Liu, H., Slack, P, Rigor, A., Zorin, Y, Mordvinova, V, Kozhevnikov, V., and Logatchev, N., 1997, SKS splitting beneath continental rift zones: Journal of Geophysical Research, v. 102, p. 22,781-22,797, doi: 10.1029/97JB01858.
11. Gashawbeza, E., Klemperer, S., Nyblade, A., Walker, K., and Keranen, K., 2004, Shear-wave splitting in Ethiopia: Precambrian mantle anisotropy locally modified by Neogene rifting: Geophysical Research Letters, v. 31, doi: 10.1029/2004GL020471.
12. Gripp, A., and Gordon, R., 2002, Young tracks of hotspots and current plate velocities: Geophysical Journal International, v. 150, p. 321-361.
13. Levin, V, and Park, J., 2000, Shear zones in the Proterozoic lithosphere of the Arabian Shield and the nature of the Hales discontinuity: Tectonophysics, v. 323, p. 131-148, doi: 10.1016/S0040-1951(00)00105-0.
14. Levin, V, Henza, A., Park, J., and Rodgers, A., 2006, Texture of mantle lithosphere along the Dead Sea Rift: Recently imposed or inherited?: Physics of the Earth and Planetary Interiors, (in press).
15. Mainprice, D., and Silver, P, 1993, Interpretation of SKS-waves using samples from the subcontinental lithosphere: Physics of the Earth and Planetary Interiors, v. 78, p. 257-280, doi: 10.1016/ 0031-9201(93)90160-B.
16. McClusky, S., Reilinger, R., Mahmoud, S., Ben Sari, D., and Tealeb, A., 2003, GPS constraints of Africa (Nubia) and Arabia plate motions: Geophysical Journal International, v. 155, p. 126-138.
17. Mooney, W., Gettings, M., Blank, H., and Healy, J., 1985, Saudi Arabian seismic refraction profile: A traveltime interpretation of crustal and upper mantle structure: Tectonophysics, v. 111, p. 173-246.
18. O'Conner, J., and le Roex, A., 1992, South Atlantic hot spot-plume systems: 1. Distribution of volcanism in time and space: Earth and Planetary Science Letters, v. 113, p. 343-364.
19. Reilinger, R., McClusky, S., Oral, M., King, R., Toksoz, M., Barka, A., Kinik, I., Lenk, O., and Sanli, I., 1997, Global positioning system measurements of present-day crustal movements in the Arabia-Africa-Eurasia plate collision zone: Journal of Geophysical Research, v. 102, p. 9983-10,000.
20. Ribe, N., 1992, On the relation between seismic anisotropy and finite strain: Journal of Geophysical Research, v. 97, p. 8737-8747.
21. Rodgers, A., Walter, W, Mellors, R., Al-Amri, A., and Zhang, Y., 1999, Lithospheric structure of the Arabian Shield and Platform from complete regional waveform modeling and surface wave group velocities: Geophysical Journal International, v. 138, p. 871-878.
22. Rodgers, A., Harris, D., Ruppert, S., Lewis, J., O'Boyle, J., Pasyanos, M., Abdallah, A., Al-Yazjeen, T, and Al-Gazo, A., 2003, A broad-band seismic deployment in Jordan: Seismological Research Letters, v. 74, p. 374-381.
23. Sandvol, E., Seber, D., Barazangi, M., Vernon, E, Mellors, R., and Al-Amri, A., 1998, Lithospheric seismic velocity discontinuities beneath the Arabian Shield: Geophysical Research Letters, v. 25, p. 2873-2876.
24. Schilling, J., Kingsley, R., Hanan, B., and McCully, B., 1992, Nd-Sr-Pb isotopic variations along the Gulf of Aden: Evidence for Afar mantle plume-continental lithosphere interaction: Journal of Geophysical Research, v. 97, p. 10,927-10,966.
25. Schmid, C., van der Lee, S., and Giardini, D., 2004, Delay times and shear wave splitting in the Mediterranean region: Geophysical Journal International, v. 159, p. 275-290, doi: 10.1111/j.1365-246X.2004.02381.x.
26. Sella, G., Dixon, T, and Mao, A., 2002, REVEL: A model for recent plate velocities from space geodesy: Journal of Geophysical Research, v. 107, doi: 10.1029/2000JB000033.
27. Silver, P, and Chan, W., 1991, Shear wave splitting and subcontinental mantle deformation: Journal of Geophysical Research, v. 96, p. 16,429-16,454.
28. Silver, P., and Holt, W, 2002, The mantle flow field beneath western North America: Science, v. 295, p. 1054-1057.
29. Stoeser, D., and Camp, V., 1985, Pan-African microplate accretion of the Arabian Shield: Geological Society of America Bulletin, v. 96, p. 917-926, doi: 10.113010016-7606(1985)96<817:PMAOTA>2.0.CO;2.
30. Vernon, F., and Berger, J., 1998, Broadband seismic characterization of the Arabian Shield: Final Scientific Technical Report, Department of Energy Contract No. F 19628-95-K-0015, p. 36.
31. Vinnik, L., Makeyeva, L., Milev, A., and Usenko, A., 1992, Global patterns of azimuthal anisotropy and deformations in the continental mantle: Geophysical Journal International, v. 111, p. 43 3-447.
32. Voggenreiter, W., Hötzl, H., and Jado, A., 1988, Red Sea related history of extension and magmatism in the Jizan area (southwest Saudi Arabia): Indication for simple-shear during Red Sea rifting: Geologische Rundschau, v. 77, p. 257-274, doi: 10.1007/BF01848688.
33. Walker, K., Nyblade, A., Klemperer, S., Bokelmann, G., and Owens, T, 2004, On the relationship between extension and anisotropy: Constraints from shear wave splitting across the East African Plateau: Journal of Geophysical Research, v. 109, doi: 10.1029/2003JB002866.
34. Walker, K., Bokelmann, G., Klemperer, S., and Nyblade, A., 2005, Shear wave splitting around hotspots: Evidence for upwelling-related mantle flow?, in Foulger, G., et al., eds., "Plates, plumes, and paradigms: Geological Society of America Special Paper 388, p. 171-192.
35. Wernicke, B., 1985, Uniform-sense normal simple-shear of the continental lithosphere: Canadian Journal of Earth Sciences, v. 22, p. 108-125.
36. Wolfe, C., Vernon, F., and Al-Amri, A., 1999, Shear-wave splitting across western Saudi Arabia: The pattern of upper mantle anisotropy at a Proterozoic shield: Geophysical Research Letters, v. 26, p. 779-782.