Seismic anisotropy beneath southern Iberia from SKS splitting

Earth and Planetary Science Letters

Volumn 273, Issue 3-4, 2008, Pages 237-250

  Buontempo, L ^a   Bokelmann, G H R ^b   Barruol, G ^b   Morales, J ^a  

^a UNIVERSITY OF GRANADA   (Spain)

^b UNIVERSITÉ MONTPELLIER 2   (France)

Author keywords

asthenosphere; delamination; Gibraltar arc; lithosphere; seismic anisotropy; subduction

Indexed keywords

ALBORAN SEA; ASTHENOSPHERE; DELAMINATION; DELAY TIMES; GEODYNAMIC MODELING; GEOLOGICAL STRUCTURES; GIBRALTAR; GIBRALTAR ARC; IBERIAN PENINSULA; LITHOSPHERE; POLARIZATION DIRECTIONS; SEISMIC ANISOTROPY; SHEAR-WAVE SPLITTING; SHEAR-WAVE SPLITTING MEASUREMENTS; SPATIAL VARIATIONS; SUBDUCTION; TECTONIC EVOLUTION; TELESEISMIC EVENTS; UPPER MANTLE; WESTERN MEDITERRANEAN;

ANISOTROPY; CAVITY RESONATORS; CODES (SYMBOLS); DEFORMATION; LANDFORMS; NEON; SEISMIC PROSPECTING; SEISMOLOGY; SHEAR WAVES; STAGES;

CRYSTALLOGRAPHY;

ASTHENOSPHERE; BODY WAVE; DEFORMATION; DELAMINATION; LITHOSPHERE; MOHO; S-WAVE; SEISMIC ANISOTROPY; TELESEISMIC WAVE; UPPER MANTLE;

AFRICA; CEUTA; EURASIA; EUROPE; GIBRALTAR; IBERIAN PENINSULA; NORTH AFRICA; SOUTHERN EUROPE;

EID: 49849101026     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2008.06.024     Document Type: Article

References (77)

1. Baccheschi P., Margheriti L., and Steckler M.S. Seismic anisotropy reveals focused mantle flow around the Calabrian slab (Southern Italy). Geophys. Res. Lett. 34 (2007) L05302 10.1029/2006GL028899
2. Balanyá J.C., and García-Dueñas V. El Cabalgamiento cortical de Gibraltar y la tectónica de Béticas y Rif, presentado en II Congreso Geológico de España. Simposium sobre Cinturones Orogénicos (1988)
3. Barruol G., and Mainprice D. A quantitative evaluation of the contribution of crustal rocks to the shear wave splitting of teleseismic SKS waves. Phys. Earth Planet. Inter. 78 3-4 (1993) 281-300 10.1016/0031-9201(93)90161-2
4. Barruol G., Silver P.G., and Vauchez A. Seismic anisotropy in the eastern US: deep structure of a complex continental plate. J. Geophys. Res. 102 B4 (1997) 8329-8348
5. Barruol G., Deschamps A., and Coutant O. Mapping Upper mantle anisotropy beneath SE France by SKS splitting indicates a Neogene asthenospheric flow induced by the Apenninic slab rollback and deflected by the deep Alpine roots. Tectonophysics 394 (2004) 125-138 10.1016/j.tecto.2004.08.002
6. Ben Ismaïl W., and Mainprice D. An olivine fabric database: an overview of upper mantle fabrics and seismic anisotropy. Tectonophysics 296 1-2 (1998) 145-157
7. Blanco M.J., and Spakman W. The P-wave velocity structure of the mantle below the Iberian Peninsula: evidence for subducted lithosphere below southern Spain. Tectonophysics 221 (1993) 13-34
8. Bokelmann G.H.R., and Maufroy E. Mantle structure under Gibraltar constrained by dispersion of body waves. Geophys. Res. Lett. 34 (2007) L22305 10.1029/2007GL030964
9. Bormann P., Grünthal G., Kind R., and Montag H. Upper mantle anisotropy beneath Central Europe from SKS wave splitting: effects of absolute plate motion and lithosphere asthenosphere boundary topography?. J. Geodynamics 22 1-2 (1996) 11-32
10. Bowman J.R., and Ando M. Shear-wave splitting in the upper-mantle wedge above the Tonga subduction zone. Geophys. J. R. Astron. Soc. 88 (1987) 25-41
11. Buforn E., Coca P., Udías A., and Lasa C. Source mechanism of intermediate and deep earthquakes in southern Spain. J. Seismol. 1 (1997) 113-130
12. Buland R., and Chapman C.H. The computation of seismic travel times. Bull. Seismol. Soc. Am. 73 (1983) 1,271-1,302
13. Calvert A., Sandvol E., Seber D., Barazangi M., Roecker S., Mourabit T., Vidal F., Alguacil G., and Jabour N. Geodynamic evolution of the lithosphere and upper-mantle beneath the Alboran Region of the western Mediterranean-constraints from travel-time tomography. J. Geophys. Res. 105 (2000) 10871-10898
14. Calvert A., Sandvol E., Seber D., Barazangi M., Vidal F., Alguacil G., and Jabour N. Propagation of regional seismic phases (Lg and Sn) and Pn velocity structure along the Africa-Iberia plate boundary zone: tectonic implications. Geophys. J. Int. 142 (2000) 384-408
15. Civello S., and Margheriti L. Toroidal mantle flow around the Calabrian slab (Italy) from SKS splitting. Geophys. Res. Lett. 31 (2004) L10601 10.1029/2004GL019607
16. Comas M.C., Platt J.P., Soto J.I., and Watts A.B. The origin and tectonic history of the Alborán Basin: insights from Leg 161 results. In: Zahn R., Comas M.C., and Klaus A. (Eds). Proc. ODP, Sci. Results (1999), Ocean Drilling Program, College Station, TX 555-579
17. De Larouzière F.D., Bolze J., Bordet P., Hernández J., Montenat C., and Ott d'Estevou P. The Betic segment of the lithospheric Trans-Alboran shear zone during the Late Miocene. Tectonophysics 152 (1988) 41-52
18. Dewey J.F., Helman M.L., Turco E., Hutton D.H.W., and Knott S.D. Kinematics of the western Mediterranean, in: Conference on Alpine tectonics. In: Coward M.P., Dietrich D., and Park R.G. (Eds) (1989), Geological Society of London Special Publications, London 265-283
19. Diaz J., Gallart J., Hirn A., and Paulssen H. Anisotropy beneath the Iberian Peninsula: the contribution of the ILIHA-NARS broad-band experiment. Pure Appl. Geophys. 151 (1998) 395-405
20. Duggen S., Hoernle K., Van den Bogaard P., and Garbe-Schonberg D. Post-collisional transition from subduction- to intraplate-type magmatism in the westernmost Mediterranean: evidence for continental-edge delamination of subcontinental lithosphere. J. Petrol. 46 (2005) 1155-1201
21. Faccenna C., Piromallo C., Crespo-Blanc A., Jolivet L., and Rossetti F. Lateral slab deformation and the origin of the western Mediterranean arcs. Tectonics 23 (2004) TC1012 10.1029/2002TC001488
22. Fernández-Ibáñez F., Soto J.I., Zoback M.D., and Morales J. Present-day stress field in the Gibraltar Arc (western Mediterranean). J. Geophys. Res. 112 (2007) B08404 10.1029/2006JB004683
23. Fontaine F.R., Barruol G., Tommasi A., and Bokelmann G.H.R. Upper-mantle flow beneath French Polynesia from shear wave splitting. Geophys. J. Int. (2007) 223 10.1111/j.1365-246X.2007.03475.x
24. Fouch M.J., Fischer K.M., Parmentier E.M., Wysession M.E., and Clarke T.J. Shear wave splitting, continental keels, and patterns of mantle flow. J. Geophys. Res. 105 B3 (2000) 6255-6275
25. Galindo-Zaldívar J., Jabaloy A., González-Lodeiro F., and Aldaya F. Crustal structure of the central sector of the Betic Cordillera (SE Spain). Tectonics 16 (1997) 18-37
26. Garcia-Dueñas V. Les unités allochtones de la zone Subbétique,dans la transversale de Grenade (Cordillères Bétiques, Espagne). Rev. Geogr. Phys. Geol. Dyn. 2 (1969) 211-222
27. Garcia-Hernandez M., Lopez-Garrido A.C., Rivas P., Sanz de Galdeano C., and Vera J.A. Mesozoic paleogeographic evolution of the External Zones of the Betic Cordillera. Geol. Mijnb. 59 (1980) 155-168
28. Godfrey N.J., Christensen N.I., and Okaya D.A. Anisotropy of schists: contribution of crustal anisotropy to active source seismic experiments and shear wave splitting observations. J. Geophys. Res. 105 (2000) 27991-28007
29. Gripp A.E., and Gordon R.G. Young tracks of hotspots and current plate velocities. Geophys. J. Int. 150 (2002) 321-361
30. Gutscher M.A., Malod J., Rehault J.P., Contrucci I., Klingelhoefer F., Mendes V.L., and Spakman W. Evidence for active subduction beneath Gibraltar. Geology 30 (2002) 1071-1074
31. Jung H., and Karato S. Water-induced fabric transitions in olivine. Science 293 (2001) 1460-1463 10.1126/science.1062235
32. Kaminski E., and Ribe N.M. Timescales for the evolution of seismic anisotropy in mantle flow. Geochem. Geophys. Geosystem 3 (2002) 1051 10.1029/2001GC000222
33. Kennett B.L.N. Seismic traveltime table. In: Ahrens T.J. (Ed). Global Earth Physics. A Handbook of Physical Constants. AGU Ref. Shelf. (1995), AGU, Washington, DC 126-143
34. Kennett B.L.N., and Engdahl E.R. Travel times for global earthquake location and phase identification. Geophys. J. Int. 105 (1991) 429-465
35. Lonergan L., and White N. Origin of the Betic-Rif mountain belt. Tectonics 16 (1997) 504-522
36. Lucente F.P., Margheriti L., Piromallo C., and Barruol G. Seismic anisotropy reveals the long route of the slab through the western-central Mediterranean mantle. Earth Planet. Sci. Lett. 241 (2006) 517-529 10.1016/j.epsl.2005.10.041
37. Luján M., Crespo-Blanc A., and Balanyá J.C. The Flysch Trough thrust imbricate (Betic Cordillera):a key element of the Gibraltar Arc orogenic wedge. Tectonics 25 (2006) TC6001 10.1029/2005TC001910
38. Mainprice D., and Silver P.G. Interpretation of SKS-waves using samples from the subcontinental lithosphere. Phys. Earth Planet. Inter. 78 (1993) 257-280 10.1016/0031-9201(93)90160-B
39. Mainprice D., Barruol G., and Ben Ismail W. The seismic anisotropy of the Earth's mantle: from single crystal to polycrystal. In: Karato S.I. (Ed). Earth's Deep Interior: Mineral Physics and Tomography from the Atomic to the Global Scale. Geodyn. Ser. (2000), AGU, Washington, D.C. 237-264
40. Mainprice D., Tommasi A., Couvy H., Cordier P., and Frost D.J. Pressure sensitivity of olivine slip systems: implications for the interpretation of seismic anisotropy of the Earth's upper mantle. Nature 433 (2005) 731-733
41. Marson-Pidgeon K., and Savage M. Shear-wave splitting variations across an array in the southern North Island, New Zealand. Geophys. Res. Lett. 31 (2004) 21602 10.1029/2004GL021190
42. Mele G., Rovelli A., Seber D., Hearn T., and Barazangi M. Compressional velocity structure and anisotropy in the uppermost mantle beneath Italy and surrounding regions. J. Geophys. Res. 103 B6 (1998) 10.1029/98JB00596
43. Morales J., Serrano I., Jabajoy A., Galindo-Zaldívar J., Zhao D., Torcal F., Vidal F., and González Lodeiro F. Active continental subduction beneath the Betic Cordillera and the Alborán Sea. Geology 27 (1999) 735-738
44. Nicolas A., and Christensen N.I. Formation of anisotropy in upper mantle peridotites-A review. In: Fuchs K., and Froideveaux C. (Eds). Composition Structure and Dynamics of the Lithosphere Asthenosphere System (1987), AGU, Washington D.C. 111-123
45. Ott D'Estevou P., and Montenat C. Evolution structurale de la zone bétique orientale (Espagne) du Tortonian a l'Holocene. C. R. Acad. Sci. Paris 300 (1985) 363-368
46. Pera E., Mainprice D., and Burlini L. Petrophysical properties of the upper mantle beneath the Torre Alfina area (Northern Apennines, Central Italy). Tectonophysics 370 (2003) 11-30
47. Platt J.P., and Vissers R.L.M. Extensional collapse of thickened continental lithosphere: a working hypothesis for the Alboran Sea and Gibraltar Arc. Geology 17 (1989) 540-543
48. Platt J.P., Soto J.I., Comas M.C., and Leg 161 Shipboard Scientific Party. Decompression and high-temperature-low-pressure metamorphism in the exhumed floor of an extensional basin, Alboran Sea, western Mediterranean. Geology 24 5 (1996) 447-450
49. Platt J.P., Soto J.I., Whitehouse M.J., Hurford A.J., and Kelley S.P. Thermal evolution, rate of exhumation, and tectonic significance of metamorphic rocks from the floor of the Alboran extensional basin, western Mediterranean. Tectonics 17 (1998) 671-689
50. Platt J.P., Whitehouse M.J., Kelley S.P., Carter A., and Hollick L. Simultaneous extensional exhumation across the Alborán Basin: implications for the causes of late orogenic extension. Geology 31 (2003) 251-254
51. Rosenbaum G., and Lister G.S. Neogene and Quaternary rollback evolution of the Tyrrhenian Sea, the Apennines and the Sicilian Maghrebides. Tectonics 23 (2004) TC1013 10.1029/2003 TC001518
52. Royden L.H. Evolution of retreating subduction boundaries formed during continental collision. Tectonics 12 (1993) 629-638
53. Russo R., and Silver P. Trench-parallel flow beneath the Nazca Plate from seismic anisotropy. Science 263 (1994) 1105-1111
54. Savage M.K. Seismic anisotropy and mantle deformation: what have we learned from shear wave splitting?. Rev. Geophys. 37 (1999) 69-106
55. Schmid C., Van der Lee S., and Giardini D. Delay times and shear wave splitting in the Mediterranean region. Geophys. J. Int. 159 (2004) 275-290
56. Seber D., Barazangi M., Ibenbrahim A., and Demnati A. Geophysical evidence for lithospheric delamination beneath the Alboran Sea and Rif-Betics mountains. Nature 379 (1996) 785-790
57. Serrano I., Hearn T.M., Morales J., and Torcal F. Seismic anisotropy and velocity structure beneath the southern half of the Iberian peninsula. Phys. Earth Planet. Inter. 150 4 (2005) 317-330
58. Sieminski A., Liu Q., Trampert J., and Tromp J. Finite-frequency sensitivity of body waves to anisotropy based upon adjoint methods. Geophys. J. Int. 171 (2007) 368-389 10.1111/j.1363-246X.2007.03528.x
59. Silver P.G., and Chan W.W. Implications for continental structure and evolution from seismic anisotropy. Nature 335 (1988) 34-39
60. Silver P.G., and Chan W.W. Shear wave splitting and subcontinental mantle deformation. J. Geophys. Res., 96 (1991) 16429-16454
61. Silver P.G., and Savage M. The interpretation of shear-wave splitting parameters in the presence of two anisotropic layers. Geophys. J. Int. 119 (1994) 949-963
62. Simancas J.F., Carbonell R., Gonzalez Lodeiro F., Perez Estaun A., Juhlin C., Ayarza P., Kashubin A., Azor A., Marti{dotless}nez Poyatos D., Almodovar G.R., Pascual E., Saez R., and Exposito I. Crustal structure of the transpressional Variscan orogen of SW Iberia: SW Iberia deep seismic reflection profile (IBERSEIS). Tectonics 22 6 (2003) 1062
63. Stich D., Ammon C.J., and Morales J. Moment tensor solutions for small and moderate earthquakes in the Ibero-Maghreb region. J. Geophys. Res. 108 (2003) 2148 doi:10.1029/2002JB002057
64. Stich D., Mancilla F., and Morales J. Crust-mantle coupling in the Gulf of Cadiz (SW-Iberia). Geophys. Res. Lett. 2 (2005) L13306 10.1029/2005GL023098
65. Stich D., Serpelloni E., Mancilla F., and Morales J. Kinematics of the Iberia-Maghreb plate contact from seismic moment tensors and GPS observations. Tectonophysics 426 (2006) 295-317
66. Turner S.P., Platt J.P., George R.M.M., Kelley S.P., Pearson D.G., and Nowell G.M. Magmatism associated with orogenic collapse of the Betic-Alboran Domain. SE Spain. J. Petrol. 40 (1999) 1011-1036
67. Vauchez A., and Nicolas A. Mountain building: strike parallel motion and mantle anisotropy. Tectonophysics 185 (1991) 183-201
68. Vauchez A., and Garrido C. Seismic properties of an asthenospherized lithospheric mantle: constraints from lattice preferred orientations in peridotite from the Ronda Massif. Earth Planet. Sci. Lett. 192 (2001) 245-259
69. Vinnik L.P., Makeyeva L.I., Milev A., and Usenko A.Yu. Global patterns of azimuthal anisotropy and deformations in the continental mantle. Geophys. J. Int. 111 (1992) 433-447
70. Walker K.T., Bokelmann G.H.R., Klemperer S.L., and Bock G. Shear-wave splitting around the Eifel hotspot: evidence for a mantle upwelling. Geophys. J. Int., 163 (2005) 962-980
71. Walker K.T., Bokelmann G.H.R., Klemperer S.L., Bock G., and the Eifel plume team. Seismic anisotropy in the asthenosphere beneath the Eifel region. In: Ritter J.R.R., and Christensen U.R. (Eds). Mantle plumes - a multidisciplinary approach (2007), Springer-Verlag, VIII 439-464
72. Wessel P., and Smith H.F. New version of the Generic Mapping Tools released. EOS, Trans. Am. Geophys. Un. 76 (1995) 329
73. Wortel M.J.R., and Spakman W. Subduction and slab detachment in the Mediterranean-Carpathian region. Science 290 (2000) 1910-1917
74. Wüstefeld A., and Bokelmann G.H.R. Null detection in shear-wave splitting measurements. Bull. Seismol. Soc. Am. 97 4 (2007) 1204-1211
75. Wüstefeld A., Bokelmann G.H.R., Zaroli C., and Barruol G. SplitLab: a shear-wave splitting environment in Matlab. Comput. Geosci (2008) 10.1016/j.cageo.2007.1008.1002
76. Zeck H.P. Betic-Rif orogeny:subduction of Mesozoic Tethys lithosphere under eastward drifting Iberia, slab detachment shortly before 22 Ma, and subsequent uplift and extensional tectonics. Tectonophysics 254 (1996) 1-16
77. Zeck H.P., Kristensen A.B., and Williams I.S. Post-collisional volcanism in a sinking slab setting-crustal anatectic origin of pyroxene-andesite magma, Caldear Volcanic Group, Neogene Alborán volcanic Province, southeastern Spain. Lithos 45 (1998) 499-522