Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/27171
Title: The Malta-Sicily Escarpment : mass movement dynamics in a sediment-undersupplied margin
Authors: Micallef, Aaron
Georgiopoulou, Aggeliki
Bas, Timothy Le
Mountjoy, Joshu
Huvenne, Veerle
Iacono, Claudio Lo
Keywords: Submarine geology -- Research
Submarine topography -- Malta
Submarine topography -- Italy -- Sicily
Canyons -- Malta
Canyons -- Italy -- Sicily
Submarine topography -- Malta
Submarine topography -- Italy -- Sicily
Sedimentology -- Research
Issue Date: 2013
Publisher: Springer
Citation: Micallef, A., Georgiopoulou, A., Le Bas, T., Mountjoy, J., Huvenne, V., & Iacono, C. L. (2013). The Malta-Sicily Escarpment: mass movement dynamics in a sediment-undersupplied margin. 6th International Symposium on Submarine Mass Movements and their Consequences, Kiel. 317-328.
Abstract: The Malta-Sicily Escarpment (MSE) is a steep carbonate escarpment that appears to have largely remained isolated from inputs of fluvial and littoral sediments since the Messinian Salinity Crisis. Mass movement activity has so far only been inferred from sediment cores at the base of the MSE. In this study we use geophysical and sedimentological data acquired from the upper MSE and outer Malta Plateau to: (i) map and characterise the dominant forms of mass movements, and (ii) determine the nature and origin of these mass movements, and their role in the evolution of the MSE. We document 67 mass movement scars across 370 km2 of seafloor. Slope instability entailed translational slides, spreads and debris flows that mobilised Plio-Pleistocene outer shelf hemipelagic/pelagic sediments or carbonate sequences across the upper continental slope. Slope failure events are caused by loss of support associated with the formation of channels, gullies, canyon heads and fault-related escarpments. Mass movements play a key role in eroding the seafloor and transferring material to the lower MSE. In particular, they control the extent of headward and lateral extension of submarine canyons, facilitate tributary development, remove material from the continental shelf and slope, and feed sediment and drive its transport across the submarine canyon system.
URI: https://www.um.edu.mt/library/oar//handle/123456789/27171
Appears in Collections:Scholarly Works - FacSciGeo

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