Geo-Marine Letters

, Volume 31, Issue 1, pp 19–36 | Cite as

Recent structures in the Alboran Ridge and Yusuf fault zones based on swath bathymetry and sub-bottom profiling: evidence of active tectonics

  • Pedro Martínez-García
  • Juan I. Soto
  • Menchu Comas
Original

Abstract

The seafloor of the Alboran Sea in the western Mediterranean is disrupted by deformations resulting from convergence between the African and Eurasian plates. Based on a compilation of existing and new multibeam bathymetry data and high-resolution seismic profiles, our main objective was to characterize the most recent structures in the central sector, which depicts an abrupt morphology and was chosen to investigate how active tectonic processes are shaping the seafloor. The Alboran Ridge is the most prominent feature in the Alboran Sea (>130 km in length), and a key element in the Gibraltar Arc System. Recent uplift and deformation in this ridge have been caused by sub-vertical, strike-slip and reverse faults with associated folding in the most recent sediments, their trend shifting progressively from SW–NE to WNW–ESE towards the Yusuf Lineament. Present-day transtensive deformation induces faulting and subsidence in the Yusuf pull-apart basin. The Alboran Ridge and Yusuf fault zones are connected, and both constitute a wide zone of deformation reaching tens of kilometres in width and showing a complex geometry, including different active fault segments and in-relay folds. These findings demonstrate that Recent deformation is more heterogeneously distributed than commonly considered. A narrow SSW–NNE zone with folding and reverse faulting cuts across the western end of the Alboran Ridge and concentrates most of the upper crustal seismicity in the region. This zone of deformation defines a seismogenic, left-lateral fault zone connected to the south with the Al Hoceima seismic swarm, and representing a potential seismic hazard. Newly detected buried and active submarine slides along the Alboran Ridge and the Yusuf Lineament are clear signs of submarine slope instability in this seismically active region.

References

  1. Ait Brahim L, Chotin P, Hinaj S, Abdelouafi A, El Adraoui A, Nakcha C, Dhont D, Charroud M, Sossey Alaoui F, Amrhar M, Bouaza A, Tabyaoui H, Chaouni A (2002) Paleostress evolution in the Moroccan African margin from Triassic to present. Tectonophysics 357:187–205CrossRefGoogle Scholar
  2. Alonso B, Ercilla G (2003) Small turbidite systems in a complex tectonic setting (W Mediterranean Sea): morphology and growth patterns. Mar Petrol Geol 19:1225–1240CrossRefGoogle Scholar
  3. Alonso B, Maldonado A (1992) Plio-quaternary margin growth patterns in a complex tectonic setting: Northeastern Alboran Sea. Geo Mar Lett 12(2/3):137–143. doi:10.1007/BF02084924 CrossRefGoogle Scholar
  4. Alvarez-Marrón J (1999) Pliocene to Holocene structure of the eastern Alboran Sea (Western Mediterranean). In: Zahn R, Comas MC, Klaus A (eds) Proceedings of the Ocean Drilling Program, Scientific Results 161. Ocean Drilling Program, College Station, pp 345–355Google Scholar
  5. Ammar A, Mauffret A, Gorini C, Jabo H (2007) The tectonic structure of the Alboran margin of Morocco. Rev Soc Geol Esp 20:247–271Google Scholar
  6. Ballesteros M, Rivera J, Muñoz A, Muñoz-Martín A, Acosta J, Carbó A, Uchupi E (2008) Alboran basin, Southern Spain. Part II: neogene tectonic implications for the orogenic float model. Mar Petrol Geol 25:75–101CrossRefGoogle Scholar
  7. Bárcenas P, Vázquez JT, Díaz del Río V, Fernández-Salas LM (2004) Geomorfología del Banco de la Isla de Alborán. Geo-Temas 6:209–212Google Scholar
  8. Benmakhlouf M, Galindo-Zaldívar J, Chalouan A, Sanz de Galdeano C, Ahmamou M, López-Garrido AC (2005) Cinemática y paleoesfuerzos en la zona de falla transcurrente de Jebha-Chrafate (Rif septentrional, Marruecos). Geogaceta 38:71–74Google Scholar
  9. Biggs J, Bergman E, Emmerson B, Funning GJ, Jackson JA, Parsons B, Wright TJ (2006) Fault identification for buried strike-slip earthquakes using InSAR: the 1994 and 2004 Al Hoceima, Morocco earthquakes. Geophys J Int 166:1347–1362CrossRefGoogle Scholar
  10. Bourgois J, Mauffret A, Ammar A, Demnati A (1992) Multichannel seismic data imaging of inversion tectonics of the Alboran Ridge (western Mediterranean Sea). Geo Mar Lett 12(2/3):117–122. doi:10.1007/BF02084921 CrossRefGoogle Scholar
  11. Calvert A, Sandvol E, Seber D, Barazangi M, Roecker S, Mourabit T, Vidal F, Alguacil G, Jabour N (2000) Geodynamic evolution of the lithosphere and upper-mantle beneath the Alboran Region of the western Mediterranean—constraints for travel time tomography. J Geophys Res 105:10871–10898CrossRefGoogle Scholar
  12. Campos J, Maldonado A, Campillo AC (1992) Post-Messinian evolutional patterns of the central Alboran Sea. Geo Mar Lett 12(2/3):173–178. doi:10.1007/BF02084929 CrossRefGoogle Scholar
  13. Chalouan A, Saji R, Michard A, Bally AW (1997) Neogene tectonic evolution of the southwestern Alboran Basin as inferred from seismic data off Morocco. Am Assoc Pet Geol Bull 81:1161–1184Google Scholar
  14. Chalouan A, Michard A, El Kadiri K, Negro F, Frizon de Lamotte D, Soto JI, Saddiqi O (2008) The Rift Belt. In: Michard A, Saddiqi O, Chalouan A, Frizon de Lamotte D (eds) The Rif belt continental evolution: the geology of Morocco. Structure, stratigraphy, and tectonics of the Africa-Atlantic-Mediterranean triple junction. Lecture in Earth Sciences, vol 116. Springer, Berlin, pp 203–302Google Scholar
  15. Comas MC, García-Dueñas V, Jurado MJ (1992) Neogene tectonic evolution of the Alboran Sea from MCS data. Geo Mar Lett 12(2/3):157–164. doi:10.1007/BF02084927 CrossRefGoogle Scholar
  16. Comas MC, Zahn R, Klaus A, Shipboard Scientific Party (1996) Proceedings of the Ocean Drilling Program, initial reports 161. Ocean Drilling Program, College StationCrossRefGoogle Scholar
  17. Comas MC, Platt JP, Soto JI, Watts AB (1999) The origin and tectonic history of the Alboran basin: insights from Leg 161 results. In: Zahn R, Comas MC, Klaus A (eds) Proceedings of the Ocean Drilling Program, scientific results 161. Ocean Drilling Program, College Station, pp 555–580Google Scholar
  18. de Kaenel EP, Siesser WG, Murat A (1999) Pleistocene calcareous nannofossil biostratigraphy and the western Mediterranean sapropels, sites 974 to 977 and 979. In: Zahn R, Comas MC, Klaus A (eds) Proceedings of the Ocean Drilling Program, scientific results 161. Ocean Drilling Program, College Station, pp 159–183Google Scholar
  19. de Larouzière FD, Bolze J, Bordet P, Hernandez J, Montenat C, Ott d’Estevou P (1988) The Betic segment of the lithospheric trans-Alboran shear zone during the Late Miocene. Tectonophysics 152:41–52CrossRefGoogle Scholar
  20. DeMets C, Gordon RG, Argus DF, Stein S (1994) Effect of recent revisions to the geomagnetic reversal time scale on estimate of current plate motions. Geophys Res Lett 21:2191–2194CrossRefGoogle Scholar
  21. Duggen S, Hoernle K, van den Bogaard P, Harris C (2004) Magmatic evolution of the Alboran region: the role of subduction in forming the western Mediterranean and causing the Messinian Salinity Crisis. Earth Planet Sci Lett 218:91–108CrossRefGoogle Scholar
  22. Ercilla G, Alonso B, Baraza J (1992) Sedimentary evolution of the northwestern Alboran Sea during the Quaternary. Geo Mar Lett 12(2/3):144–149. doi:10.1007/BF02084925 CrossRefGoogle Scholar
  23. Estrada F, Ercilla G, Alonso B (1997) Pliocene-Quaternary tectonic-sedimentary evolution of the NE Alboran Sea (SW Mediterranean Sea). Tectonophysics 282:423–442CrossRefGoogle Scholar
  24. Fadil A, Vernant P, McClusky S, Reilinger R, Gomez F, Ben Sari D, Mourabit T, Feigl K, Barazangi M (2006) Active tectonics of the western Mediterranean: geodetic evidence for rollback of a delaminated subcontinental lithospheric slab beneath the Rif Mountains, Morocco. Geology 34:529–532CrossRefGoogle Scholar
  25. Fernández-Ibáñez F, Soto JI (2008) Crustal rheology and seismicity in the Gibraltar Arc (western Mediterranean). Tectonics 27:TC2007. doi:10.1029/2007TC002192 CrossRefGoogle Scholar
  26. Fernández-Ibáñez F, Soto JI, Zoback MD, Morales J (2007) Present-day stress field in the Gibraltar Arc (western Mediterranean). J Geophys Res 112:B08404. doi:10.1029/2006JB004683 CrossRefGoogle Scholar
  27. Galindo-Zaldívar J, Jabaloy A, González Lodeiro F, Aldaya F (1997) Crustal structure of the central sector of the Betic Cordillera (SE Spain). Tectonics 16:18–37CrossRefGoogle Scholar
  28. Galindo-Zaldívar J, Chalouan A, Azzouz O, Sanz de Galdeano C, Anahnah F, Ameza L, Ruano P, Pedrera A, Ruiz-Constán A, Marín-Lechado C, Benmakhlouf M, López-Garrido AC, Ahmamou M, Saji R, Roldán-García FJ, Akil M, Chabli A (2009) Are the seismological and geological observations of the Al Hoceima (Morocco, Rif) 2004 earthquake (M = 6.3) contradictory? Tectonophysics 475:59–67CrossRefGoogle Scholar
  29. García M, Alonso B, Ercilla G, Gràcia E (2006) The tributary valley systems of the Almeria Canyon (Alboran Sea, SW Mediterranean): sedimentary architecture. Mar Geol 226:207–223CrossRefGoogle Scholar
  30. García-Dueñas V, Balanyá JC, Martínez-Martínez JM (1992) Miocene extensional detachments in the outcropping basement of the northern Alboran Basin (Betics) and their tectonic implications. Geo Mar Lett 12(2/3):88–95. doi:10.1007/BF02084917 CrossRefGoogle Scholar
  31. Gràcia E, Pallàs R, Soto JI, Comas MC, Moreno X, Masana E, Santanach P, Diez S, García M, Dañobeitia JJ, HITS Scientific Party (2006) Active faulting offshore SE Spain (Alboran Sea): implications for earthquake hazard assessment in the Southern Iberian Margin. Earth Planet Sci Lett 241:734–749CrossRefGoogle Scholar
  32. Guerra-Merchán A, Serrano F, Ramallo D (2004) Geomorphic and sedimentary Plio-Pleistocene evolution of the Nerja area (northern Alboran basin, Spain). Geomorphology 60:89–105CrossRefGoogle Scholar
  33. Heburn GW, La Violette PE (1990) Variations in the structure of the anticyclonic gyres found in the Alboran Sea. J Geophys Res 95:1599–1613CrossRefGoogle Scholar
  34. Lo Iacono C, Gràcia E, Diez S, Bozzano G, Moreno X, Dañobeitia JJ, Alonso B (2008) Seafloor characterization and backscatter variability of the Almería Margin (Alboran Sea, SW Mediterranean) based on high-resolution acoustic data. Mar Geol 250:1–18CrossRefGoogle Scholar
  35. Lobo FJ, Maldonado A, Hernandez-Molina FJ, Fernandez-Salas LM, Ercilla G, Alonso B (2008) Growth patterns of a proximal terrigenous margin offshore the Guadalfeo River, northern Alboran Sea (SW Mediterranean Sea): glacio-eustatic control and disturbing tectonic factors. Mar Geophys Res 29:195–216CrossRefGoogle Scholar
  36. Maestro-González A, Bárcenas P, Vázquez T, Díaz-del-Río V (2008) The role of basement inheritance faults in the recent fracture system of the inner shelf around Alboran Island, Western Mediterranean. Geo Mar Lett 28(1):53–64. doi:10.1007/s00367-007-0089-8 CrossRefGoogle Scholar
  37. Maldonado A, Campillo AC, Mauffret A, Alonso B, Woodside J, Campos J (1992) Alboran Sea Late Cenozoic tectonic and stratigraphic evolution. Geo Mar Lett 12(2/3):179–186. doi:10.1007/BF02084930 CrossRefGoogle Scholar
  38. Martín-Serrano A (2005) Mapa geomorfológico de España y del margen continental a escala 1:1.000.000. Instituto Geológico y Minero de España, MadridGoogle Scholar
  39. Masana E, Martínez-Díaz JJ, Hernández-Enrile P, Santanach P (2004) The Alhama de Murcia fault (SE Spain), a seismogenic fault in a diffuse plate boundary: seismotectonic implications for the Ibero-Magrebian region. J Geophys Res 109:B01301. doi:10.1029/2002JB002359 CrossRefGoogle Scholar
  40. Mauffret A, Maldonado A, Campillo AC (1992) Tectonic framework of the eastern Alboran and western Algerian basins, western Mediterranean. Geo Mar Lett 12(2/3):104–110. doi:10.1007/BF02084919 CrossRefGoogle Scholar
  41. Mauffret A, Ammar A, Gorini C, Jabour H (2007) The Alboran Sea (Western Mediterranean) revisited with a view from the Moroccan Margin. Terra Nova 19:195–203CrossRefGoogle Scholar
  42. MediMap Group (2008) Morpho-bathymetry of the Mediterranean Sea. CIESM/Ifremer special publication, atlases and maps, two maps at 1/2000000. Editions Ifremer, PlouzanéGoogle Scholar
  43. Medina F (1995) Present-day state of stress in northern Morocco from focal mechanism analysis. J Struct Geol 17:1035–1046CrossRefGoogle Scholar
  44. Muñoz A, Ballesteros M, Montoya I, Rivera J, Acosta J, Uchupi E (2008) Alboran basin, Southern Spain. Part I: geomorphology. Mar Petrol Geol 25:59–73CrossRefGoogle Scholar
  45. Platt JP, Vissers RLM (1989) Extensional collapse of thickened continental lithosphere: a working hypothesis for the Alboran Sea and Gibraltar Arc. Geology 17:540–543CrossRefGoogle Scholar
  46. Reicherter K, Hübscher C (2007) Evidence for a seafloor rupture of the Carboneras Fault Zone (southern Spain): relation to the 1522 Almería earthquake? J Seismol 11:15–26. doi:10.1007/s10950-006-9024-0 CrossRefGoogle Scholar
  47. Reicherter KR, Jabaloy A, Galindo-Zaldívar J, Ruano P, Becker-Heidmann P, Morales J, Reiss S, Gonzalez-Lodeiro F (2003) Repeated palaeoseismic activity of the Ventas de Zafarraya fault (S Spain) and its relation with the 1884 Andalusian earthquake. Int J Earth Sci 92:912–922CrossRefGoogle Scholar
  48. Sanz de Galdeano C, Andreo B, López-Garrido AC (2001) Comment on the paper “Late exhumation stages of the Alpujarride Complex (western Betic Cordilleras, Spain): new thermochronological and structural data on Los Reales and Ojen nappes” by Marc Sosson, Anne-Claire Morillon, Jacques Bourgois, Gilbert Féraud, Gérard Poupeau, Pierre Saint-Marc. Tectonophysics 331:413–417CrossRefGoogle Scholar
  49. Siesser WG, de Kaenel EP (1999) Neogene calcareous nannofossils: western Mediterranean biostratigraphy and paleoclimatology. In: Zahn R, Comas MC, Klaus A (eds) Proceedings of the Ocean Drilling Program, scientific results 161. Ocean Drilling Program, College Station, pp 223–237Google Scholar
  50. Soto JI, Manzano FJ (2002) Geometría y cinemática de fallas recientes en el margen septentrional del Mar de Alborán (Sector de Maro, Provincia de Málaga). Geogaceta 31:139–142Google Scholar
  51. Stich D, Alguacil G, Morales J (2001) The relative location of multiplets in the vicinity of the Western Almeria (southern Spain) earthquake series of 1993-1994. Geophys J Int 146:801–812CrossRefGoogle Scholar
  52. Stich D, Ammon CJ, Morales J (2003) Moment tensor solutions for small and moderate earthquakes in the Ibero-Maghreb region. J Geophys Res 108:2148. doi:10.1029/2002JB002057 CrossRefGoogle Scholar
  53. Udías A, Buforn E (1991) Regional stresses along the Eurasia-Africa plate boundary derived from focal mechanisms of large earthquakes. Pure Appl Geophys 136:433–448CrossRefGoogle Scholar
  54. Vázquez JT (2001) Estructura del margen septentrional del Mar de Alborán. PhD Thesis, Universidad Complutense de Madrid, MadridGoogle Scholar
  55. Watts AB, Platt JP, Bulh P (1993) Tectonic evolution of the Alboran Sea Basin. Basin Res 5:153–177CrossRefGoogle Scholar
  56. Willet A (1991) Marine geophysical investigations of the Alboran Sea. PhD Thesis, Oxford University, OxfordGoogle Scholar
  57. Woodside JM, Maldonado A (1992) Styles of compressional neotectonics in the eastern Alboran Sea. Geo Mar Lett 12(2/3):111–116. doi:10.1007/BF02084920 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Pedro Martínez-García
    • 1
  • Juan I. Soto
    • 2
  • Menchu Comas
    • 1
  1. 1.Instituto Andaluz de Ciencias de la Tierra (CSIC and University of Granada), Facultad de CienciasGranadaSpain
  2. 2.Instituto Andaluz de Ciencias de la Tierra (CSIC and University of Granada) and Departamento de Geodinámica, Facultad de CienciasGranadaSpain

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