Sediment Failure Processes In Active Grabens: The Western Gulf Of Corinth (Greece)

Influence of bottom currents on the sedimentary processes at the western tip of the Gulf of Corinth, Greece

“…At the western tip of the Gulf, in the Mornos Canyon and the Delphic Plateau (Fig. 1D), a similar alternation between turbidites and hemipelagites has been documented by Heezen et al (1966) and Lykousis et al (2007b) from gravity cores. In the Nafpaktos Bay, Piper et al (1990) and Lykousis (1990) describe an area where seafloor erosion currently occurs, but no deposit associated to the action of bottom currents has been described so far in this area, or in the Gulf of Corinth in general.…”

“…A morphosedimentary map of the Holocene deposits was also produced through the interpretation of the bathymetry, the seismic facies and the integration of previous works ( Fig. 3B; Heezen et al, 1966;Lykousis, 1990;Piper et al, 1988Piper et al, , 1990Lykousis et al, 2007bLykousis et al, , 2009 and new coring data.…”

Recent Sedimentary Processes in the Western Gulf of Corinth, Greece: Seismic and Aseismic Turbitides

“…1). Fan delta prograding deposits during Pleistocene sea-level changes, are the predominant sedimentary processes in the steep flanks of the gulf (Ferentinos et al, 1988;Perissoratis et al, 2000;Lykousis et al, 2007b). These processes are mostly related to seismically triggered gravitative mass movements (Piper et al, 1990;Ferentinos et al, 1988;Papatheodorou and Ferentinos, 1997).…”

“…This high extensional regime is associated with intense seismic events that leave their imprints in the texture of the sediments which cover the sea-floor of that area (Ferentinos et al, 1988;Heezen et al, 1966;Lykousis et al, 2007b;Poulos et al, 1996). As a result, the earthquake history of the area could be revealed by investigating the sedimentary processes and deposits.…”

3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK

“…Whilst initial studies were generally confined to the mapping of preserved events uplifted onshore (e.g., Farrell, 1984;Martinsen and Bakken, 1990), in recent years studies that have combined core logging and geophysical techniques have proliferated. Due to their extremely high hazard, most of this work has concentrated on large-to medium-scale structures originating on active (e.g., Tappin et al, 2007) and passive (e.g., Micallef et al, 2009) continental margins; and the end-member turbidite flows channelled down submarine canyons (e.g., Lykousis et al, 2007). While several large submarine landslides have been imaged offshore using traditional 3D seismic methods (e.g., Frey-Martinez et al, 2005;Gee et al, 2006;Bull et al, 2009), studies of small-to medium-scale structures in fjord or lacustrine settings are limited to interpretation from irregularly distributed cores (e.g., Guyard et al, 2007), sparse twodimensional (2D) seismic lines (50-100 m line spacing) (e.g., Schnellmann et al, 2002), and/or their surface expression in swath/ side-scan sonar imagery (e.g., Canals et al, 2004;Ilstad et al, 2004).…”