Evidence for active subduction beneath Gibraltar

Geology

Volumn 30, Issue 12, 2002, Pages 1071-1074

  Gutscher, M A ^a   Malod, J ^a   Rehault, J P ^a   Contrucci, I ^a   Klingelhoefer, F ^b   Mendes Victor, L ^c   Spakman, W ^d  

^a INSTITUT UNIVERSITAIRE EUROPÉEN DE LA MER   (France)

^b UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^c UNIVERSITY OF LISBON   (Portugal)

^d UTRECHT UNIVERSITY   (Netherlands)

Author keywords

Accretionary wedge; Africa; Iberia; Subduction

Indexed keywords

SEISMICITY;

EARTHQUAKES; OCEANOGRAPHY; TECTONICS; TOMOGRAPHY;

GEOLOGY;

ACCRETIONARY PRISM; EARTHQUAKE; SEISMIC SURVEY; SUBDUCTION; TECTONIC SETTING;

ATLANTIC OCEAN; GIBRALTAR; MEDITERRANEAN SEA; MOROCCO; SPAIN;

EID: 0036969369     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/0091-7613(2002)030<1071:EFASBG>2.0.CO;2     Document Type: Article

References (37)

1. Argus, D.F., Gordon, R.G., Demets, C., and Stein, S., 1989, Closure of the Africa-Eurasia-North America plate motion circuit and tectonics of the Gloria fault: Journal of Geophysical Research. v. 94, p. 5585-5602.
2. Banda, E., and Ansorge, J., 1980, Crustal structure under the central and eastern part of the Betic Cordillera: Royal Astronomical Society Geophysical Journal, v. 63, p. 515-532.
3. Bijwaard, H., and Spakman. W., 2000, Non-linear global P-wave tomography by iterated linearized inversion: Geophysical Journal International, v. 141, p. 71-82.
4. Blanco, M.J., and Spakman, W., 1993, The P-wave velocity structure of the mantle below the Iberian Peninsula: Evidence for a subducted lithosphere beneath southern Spain: Tectonophysics, v. 221, p. 13-34.
5. Brown, K., and Westbrook, G.K., 1988, Mud diapirism and suberetion in the Barbados Ridge Accretionary Complex: The role of fluids in accretionary processes: Tectonics, v. 7, p. 613-640.
6. Buforn, E., Udias, A., and Madariaga, R., 1991, Intermediate and deep earthquakes in Spain: Pure and Applied Geophysics, v. 136, p. 375-393.
7. Calvert, A., Sandvol, E., Seber, D., Barazangi, M., Roecker, S., Mourabit, T., Vidal, F., Alguacil, G., and Jabour, N., 2000, Geodynamic evolution of the lithosphere and upper mantle beneath the Alboran region of the western Mediterranean: Constraints from travel time tomography: Journal of Geophysical Research, v. 105, p. 10,871-10,898.
8. Casado, C., Sanz de Galdeano, C., Palacios, S., and Romero. J., 2001, The structure of the Alboran Sea: An interpretation from seismological and geological data: Tectonophysics, v. 338, p. 79-95.
9. Centroid Moment Tensor (CMT) Catalog (1976-present), Harvard University Centroid Moment Tensor Project, digital dataset available online: http://www. seismology.harvard.edu/projects/CMT/CMTsearch. html (April 2002).
10. Chemenda, A., Mattauer, M., Malavieille, J., and Bokun, A.N., 1995, A mechanism for syn-collisional rock exhumation and associated normal faulting-Results from physical modeling: Earth and Planetary Science Letters, v. 132, p. 225-232.
11. Chung, W., and Kanamori, H., 1976, Source and tectonic implication of the Spanish deep-focus earthquake of 24 March 1954: Physics of the Earth and Planetary Interiors, v. 13, p. 85-96.
12. Docherty, C., and Banda, E., 1995, Evidence for the cast-ward migration of the Alboran Sea based on regional subsidence analysis: A case for basin formation by delamination of the subcrustal lithosphere?: Tectonics, v. 14, p. 804-818.
13. Engdahl, E.R., van der Hilst, R.D., and Buland, R., 1998, Global teleseismic earthquake relocation with improved travel times and procedures for depth relocation: Seismological Society of America Bulletin, v. 88, p. 722-743.
14. Faccenna, C., Funiciello, F., Giardini, D., and Lucente, P., 2001, Episodic back-arc extension during restricted mantle convection in the central Mediterrancan: Earth and Planetary Science Letters, v. 187, p. 105-116.
15. Gardner, J.M., 2001, Mud volcanoes revealed and sampled on the Western Moroccan continental margin: Geophysical Research Letters, v. 28, p. 339-342.
16. Kopf, A., Klaeschen, D., and Mascle, J., 2001, Extreme efficiency of mud volcanism in dewatering accretionary prisms: Earth and Planetary Science Letters, v. 189, p. 295-313.
17. Lonergan, L., and White, N., 1997, Origin of the Betic-Rif mountain belt: Tectonics, v. 16, p. 504-522.
18. Maldonado, A., Somoza, L., and Pallares, L., 1999, The Betic orogen and the Iberian-African boundary in the Gulf of Cadiz: Geological evolution (central North Atlantic): Marine Geology, v. 155, p. 9-43.
19. Morales, J., Serrano, I., Jabaloy, A., Galindo-Saldivar, J., Zhao, D., Torcal, F., Vidal, F., and Gonzales-Lodciro, F., 1999, Active continental subduction beneath the Betic Cordillera and Alboran Sea: Geology, v. 27, p. 735-738.
20. Peacock, S., 2001, Are the lower planes of double seismic zones caused by dehydration of serpentinite in the oceanic mantle?: Geology, v. 29, p. 299-302.
21. Platt, J.P., and Vissers, R.L.M., 1989, Extensional collapse of thickened continental lithosphere: A working hypothesis for the Alboran Sea and Gibraltar arc: Geology, v. 17, p. 540-543.
22. Platzman, E., 1992, Paleomagnetic rotations and the kinematics of the Gibraltar Arc: Geology, v. 20, p. 311-314.
23. Preliminary Determination of Earthquakes (PDE) Catalog (1973-present). U.S. Geological Survey. National Earthquake Information Center (NEIC). digital dataset available online: http://wwwneic.cr.usgs.gov (April 2002).
24. Rehault, J.-P., Boillot, G., and Mauffret, A., 1985, The western Mediterranean Basin, in Stanley, D.J., and Wezel, F.C., eds., Geological evolution of the Mediterranean Basin: Berlin, Springer, p. 101-129.
25. Royden, L.H., 1993, Evolution of retreating subduction boundaries formed during continental collision: Tectonics, v. 12, p. 629-638.
26. Sanz de Galdeano, C., 1990, Geologic evolution of the Betic Cordilleras in the western Mediterranean. Miocene to present: Tectonophysics, v. 172, p. 107-119.
27. Sartori, R., Torelli, L., Zitellini, N., Peis, D., and Lodolo, E., 1994, Eastern segment of the Azores-Gibraltar line (central-eastern Atlantic): An oceanic plate boundary with diffuse compressional deformation: Geology, v. 22, p. 555-558.
28. Seber, D., Barazangi, M., Ibenbrahim, B.A., and Demnati, A., 1996, Geophysical evidence for lithospheric delamination beneath the Alboran Sea and Rif-Betic Mountains: Nature, v. 379, p. 785-790.
29. Smith, W.H.F., and Sandwell, D.T., 1997, Global seafloor topography from satellite altimetry and ship depth soundings: Science, v. 277, p. 1956-1962.
30. Torelli, L., Sartori, R., and Zitellini, N., 1997, The giant chaotic body in the Atlantic off Gibraltar: New results from a deep seismic reflection survey: Marine and Petroleum Geology, v. 14, p. 125-138.
31. Torres-Roldan, R.L., Poli, G., and Peccerillo, A., 1986, An early Miocene arc-tholeitic magmatic dike event from the Alboran Sea: Evidence for precollision subduction and back-arc crustal extension in the westernmost Mediterranean: Geologische Rundschau, v. 75, p. 219-234.
32. Vissers, R.L.M., Platt, J.P., and van der Wal, D., 1995, Late orogenic extension of the Betic Cordillera and Alboran domain: A lithospheric view: Tectonics, v. 14, p. 786-803.
33. Wortel, M.J.R., and Spakman, W., 2000, Subduction and slab detachment in the Mediterranean-Carpathian region: Science, v. 290, p. 1910-1917.
34. Yuan, X., Sobolev, S.V., Kind, R., Oncken, O., and the ANCORP Working Group, 2000, Subduction and collision processes in the Central Andes constrained by converted seismic phases: Nature, v. 408, p. 958-961.
35. Zeck, H.P., 1997, Mantle peridotites outlining the Gibraltar Arc: Centrifugal extensional allocthons derived from the earlier Alpine, westward subducted nappe pile: Tectonophysics. v. 281, p. 195-207.
36. Zelt, C.A., and Smith, R.B., 1992, Seismic traveltime inversion for 2-D crustal velocity structure: Geophysical Journal International, v. 108, p. 16-31.
37. Zitellini, N., et al., 2001, Source of 1755 Lisbon earthquake and tsunami investigated: Eos (Transactions, American Geophysical Union), v. 82, p. 285-291.