Abstract
In this paper sedimentological, geotechnical, and age data from 7 piston cores of the continental slope and rise off the Ebro margin, North-western Mediterranean, are presented. The cores were obtained within and nearby an area that has undergone a major instability event occurred about 10 ka, known as the BIG’95. They show, at least, three distinct units, which are identified in relation to such event, namely a postlandslide, landslide and pre-landslide unit. Each one of these units shows distinct sedimentological and geotechnical characteristics interpreted in terms of depositional processes and consolidation history. The sedimentological and geotechnical data allows to infer that the BIG’95 is the result of a retrogressive slide and that the location of the channel levee complexes probably had a fundamental role in triggering the landslide, as well as controlling the location of the failure surface.
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References
Boe, R., Hovland, M., Instanes, A., Rise, L. and Vasshus, S., 2000. Submarine slide scars and mass movements in Karmsundet and Skudenesfjorden, southwestern Norway; morphology and evolution. Marine Geology. 167: 147–165.
Canals, M., Casamor, J.L., Urgeles, R., Lastras, G., Calafat, A.M., De Batist, M., Masson, D.G., Berné, S., Alonso, B. and Hughes Clarke, J.E., 2000. The Ebro Continental margin, Western Mediterranean Sea: Interplay between canyon-channel systems and mast wasting processes. GCSSEPM Foundation, 20th Annual Research Conference, Houston, Texas.
Díaz del Río, V., Rey, J. and Vegas, R., 1986. The Gulf of Valencia continental shelf: Extensional tectonics in Neogene and Quaternary sediments. Marine Geology, 73: 169–179.
Droz, L., Kergoat, R., Cochonat, P. and Berné, S., 2001. Recent sedimentary events in the western Gulf of Lions (western Mediterranean). Marine Geology, 176: 23–37.
Evans, D., King, E.L., Kenyon, N.H., Brett, C. and Wallis, D., 1996. Evidence for long-term instability in the Storegga Slide region off western Norway. Marine Geology, 130: 281–292.
Laberg, J.S., and Vorren, T.O., 2000. The Trœnadjupet Slide, offshore Norway — morphology, evacuation and triggering mechanisms. Marine Geology, 171: 95–114.
Lastras, G., Canals, M., Hughes-Clarke, J.E., Moreno, A., De Batist, M., Masson, D.G. and Cochonat, P., 2002. Seafllor imagery from the BIG ‘95 debris flow, western Mediterranean. Geology, 30: 871–874.
Lastras, G., Canals, M. and Urgeles, R., 2000. B1G’95: a Recent debris flow in the Ebro continental slope, North-western Mediterranean. Geology and Petroleum Geology of Mediterranean Basins Conference, October 2000, Malta.
Lastras, G., Canals, M., and Urgeles, R., 2003. Lessons from sea-floor and subsea-floor imagery of the BIG’95 scar and deposit, this volume.
Lee, H.J. and Baraza, J., 1999. Geotechnical characteristics and slope stability in the Gulf of Cadiz. Marine Geology, 155: 173–190.
Major, J.J., 2000. Gravity-driven consolidation of granular slurries-implications for debris-flow deposition and deposit characteristics. Journal of Sedimentary Research, 70: 64–83.
Mulder, T., Tisot, J.P., Cochonat, P., Bourillet, J.F., 1996. Regional assessment of mass failure events in the Baie des Anges, Mediterranean Sea. Marine Geology, 122: 29–45.
Prior, D.B., Bornhold, B., and Johns, M., 1984. Depositional characteristics of a submarine debris flow. Journal of Geology, 92: 707–727.
Rothwell, R.G., Thomson, J. and Kähler, G., 1998. Low sea-level emplacement of a very large Late Pleistocene “megaturbidite” in the western Mediterranean Sea. Nature, 392: 377–380.
Sultan, N., Cochonat, P., Bourillet, J.F. and Cayocca, F., 2001. Evaluation of the risk of marine slope instability: a pseudo-3D approach for application to large areas. Marine Georesources and Geotechnology, 19: 107–133.
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© 2003 Springer Science+Business Media Dordrecht
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Urgeles, R. et al. (2003). The Big’95 Debris Flow and Adjacent Unfailed Sediments in the NW Mediterranean Sea: Geotechnicalsedimentological Properties, and Dating. In: Locat, J., Mienert, J., Boisvert, L. (eds) Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research, vol 19. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0093-2_53
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DOI: https://doi.org/10.1007/978-94-010-0093-2_53
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3973-4
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