SUBMARINE CANYONS OF NORTH-WESTERN SICILY (SOUTHERN MEDITERRANEAN SEA): MORPHOLOGIES, SEDIMENTARY PROCESSES AND EVOLUTION ON A TECTONICALLY ACTIVE MARGIN.
Submarine canyons of the tectonically active north-western Sicilian margin have been mapped within the depth range of 80-2100 m through swath-bathymetry and seismic reflection records. The canyons display a relevant variability in their geometry, morphology and sedimentary processes, with different governing factors contributing to their evolution and differentiation. Retrograding landslides on a tectonically controlled steep slope have a primary role in the evolution of the straight and steep canyons in the Gulf of Palermo. Otherwise, canyons, tributaries and gullies mapped in the adjacent Gulf of Castellammare developed on a less steep substrate, with relevant coastal/shelf sedimentary inputs and downslope turbidity processes in their formation. Despite the geographically close proximity of the two study areas, the different structural settings and fluvial sedimentary inputs of the Castellammare and Palermo Basins are mainly responsible for canyon variability. Observed morphologies suggest on-going uplift and tilting movements along the Sicilian margin, influencing the development of the studied canyons, which have probably been more active during the Quaternary glacial maxima than they are at the present day
Lo Iacono, C., National Oceanography Centre, United Kingdom, email@example.com
Sulli, A., Dipartimento di Scienze della Terra e del Mare dell’Universita’ di Palermo , Italy
Agate, M., Dipartimento di Scienze della Terra e del Mare dell’Universita’ di Palermo, Italy
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall
Presentation is given by student: No