The Sahara Slide occurred approximately at 50-59 Ka offshore Western Sahara in a mid-slope setting (1900 m water-depth). The existence of several buried and stacked slide events, seen on high resolution seismic profiles, provide new insights into slide location and triggering mechanisms. Buried slide scarps coincide remarkably with scarps and boundaries of the Sahara Slide, presently exposed on the seafloor. The objectives of this work are to examine the long-term stability of this part of the margin and investigate the triggering mechanism(s) that led to these massive events.
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References
Antobreh A, Krastel S (2006). Mauritania Slide Complex: morphology, seismic characterisation and processes of formation. International Journal of Earth Science, DOI: 10.1007/s00531-006-0112-8.
Faugeres JC, Legigan P, Maillet N, Sarnthein M, Stein R (1989). Characteristics and distribution of Neogene turbidites at Site 657 (Leg 108, Cap Blanc continental rise, Northwest Africa): Variations in turbidite source and continetal climate. In: W. Ruddiman, Sarnthein, M., et al. (Eds), Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 108, pp. 329-348.
Gee MJR, Masson DG, Watts AB, Allen PA (1999). The Saharan debris flow: an insight into the mechanics of long runout submarine debris flows. Sedimentology, 46: 317–335.
Georgiopoulou A, Masson DG, Wynn RB, Krastel S (in prep). The Sahara Slide: A detailed source-to-sink study of a giant submarine slide on the NW African margin. To be submitted in Marine Geology.
Krastel S, Wynn RB, Hanebuth TJJ, Holz C, Georgiopoulou A, Henrich R, Schulz HD (2006). Mapping of seabed morphology and shallow sediment structure of the Mauritania continental margin, Northwest Africa: some implications for geohazard potential. Norwegian Journal of Geology, 86, pp 163–176.
Locat, J, Mienert, J (2003). Submarine mass movements and their consequences. Advances in natural and technological hazards research 19, Kluwer, Dordrecht, 540pp.
Masson DG, Kidd RB, Gardner JV, Huggett QJ, Weaver PPE (1992). Saharan continental rise: Facies distribution and sediment slides. In: Poag CW, de Graciansky PC (Eds), Geologic evolution of the Atlantic continental rises. Van Nostrand Reinhold, New York, pp. 327–343.
McHugh MGC, Damuth JE, Mountain SG (2002). Cenozoic mass-transport facies and their correlation with sea level change, New Jersey continental margin. Marine Geology 184, pp. 295–334.
von Rad U, Wissmann G (1982). Cretaceous-Cenozoic history of the West Saharan continental margin (NW Africa): development, destruction and gravitationla sedmentation. In: von Rad U, Hinz K, Sarnthein M, Seibold E (Eds), Geology of the Northwest African continental margin. Springer-Verlag, Berlin Heidelberg, New York, pp. 106–131.
Ruddiman W, Sarnthein M, Baldauf J, shipboard scientific party (1988). Proceedings of the Ocean Drilling Program, Initial Reports. Vol. 108, Section 1, Part A. Eastern tropical Atlantic: covering Leg 108 of the cruises of the Drilling Vessel “Joides Resolution”, Marseille, France to Dakar, Senegal, Sites 657-668, 18 February 1986-17 April 1986. College Station, TX: Texas A & M University Ocean Drilling Program, pp. 556.
Rusciadelli G, Di Simone S (2007). Differential compaction as control on depositional architectures across the Maiella carbonate platform margin (central Appenines, Italy). Sedimentary Geology, 196, pp. 133-155.
Sarnthein M, Thiede J, Pflaumann U, Erlenkeuser H, Fuetterer D, Koopmann B, Lange H, Seibold E (1982). Atmospheric and oceanic circulation patterns off Northwest Africa during the past 25 million years. In: von Rad U, Hinz K, Sarnthein M, Seibold E (Eds), Geology of the Northwest African continental margin. Springer-Verlag, Berlin Heideberg, New York, pp. 584–604.
Seibold E (1982). The Northwest African continental margin - An Introduction. In: von Rad U, Hinz K, Sarnthein M, Seibold E (Eds), Geology of the Northwest African continental margin. Springer- Verlag, Berlin Heidelberg, New York, pp. 3–20.
Seibold E, Hinz K (1974). Continental slope construction and deconstruction, West Africa. In: Burk CA, Drake CL (Eds), Geology of continental margins. Springer-Verlag, New York, pp. 179–196.
Solheim A, Berg K, Forsberg CF, Bryn P (2005). The Storegga Slide complex: repetitive large scale sliding with similar cause and development. Marine and Petroleum Geology, 22, pp. 97–107.
Summerhayes CP, Milliman JD, Briggs SR, Bee AG, Hogan C. (1976) Northwest African shelf sediments: influence of climate and sedimentary processes. Lournal of Geology, 84, pp. 277–300.
Weaver, PPE, Wynn, RB, Kenyon, NH, Evans, J. (2000). Continental margin sedimentation with special reference to the Northeast Atlantic margin. Sedimentology, 47: 239–256.
Wynn RB, Masson DG, Stow DAV, Weaver PPE (2000). The Northwest African slope apron: a modern analogue for deep water systems with complex seafloor topography. Marine and Petroleum Geology, 17, pp. 253–265.
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Georgiopoulou, A., Krastel, S., Masson, D.G., Wynn, R.B. (2007). Repeated Instability Of The Nw African Margin Related To Buried Landslide Scarps. In: Lykousis, V., Sakellariou, D., Locat, J. (eds) Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6512-5_4
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