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
- OA Link: http://hdl.handle.net/10447/103045
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.