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Plio-Pleistocene geological evolution of the northern Sicily continental margin (southern Tyrrhenian Sea): new insights from high-resolution, multi-electrode sparker profiles

  • Autori: Pepe, F; Sulli, A; Agate, M; Di Maio, D; Kok, A; Lo Iacono, C; Catalano, R
  • Anno di pubblicazione: 2003
  • Tipologia: Articolo in rivista (Articolo in rivista)
  • Parole Chiave: North Sicily offshore; High-resolution seismic profiles; Cefalù basin; Sequence Stratigraphy
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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.