Plio-Pleistocene geological evolution of the northern Sicily continental margin (southern Tyrrhenian Sea): new insights from high-resolution,multi-electrode sparker profiles |
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| Authors: | Email author" target="_blank">F?PepeEmail author A?Sulli M?Agate D?Di Maio A?Kok C?Lo Iacono R?Catalano |
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| Institution: | (1) Department of Geology and Geodesy, Palermo University, 90123 Palermo, Italy;(2) Geo-Resources Consulting B.V., 3023 CD Rotterdam, The Netherlands |
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| Abstract: | High-resolution seismic profiles were acquired in the north Sicily offshore region with an innovative, multi-tip sparker array which lacks ringing and has a base frequency around 600 Hz. The new data, combined with published data, suggest that intra-slope and extensional basins formed as a consequence of the late Miocene (?)–early Pliocene shortening and thrusting, and the middle (?)–late Pliocene continental rifting affecting the internal side of the Sicilian-Maghrebian chain. Early (?) Pleistocene to Holocene high-amplitude and high-frequency sea-level changes resulted in repeated sub-aerial exposure and flooding of the shelf, and the deposition of cyclically arranged hemipelagic and shelf sediments. An uplift of the shelf could explain the non-preservation of the transgressive and of the lowstand wedge systems tracts in the oldest sequences. |
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