Estensione e ciclicità di accumuli debritici tardo-pleistocenici nei bacinidi Sibari e Corigliano (Mar Ionio): implicazioni per la tettonica recente ed attiva.

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Abstract

[automatically translated] sedimentary bodies seismic facies characterized by remarkable "transparent" thick (up to 35 m) have been documented in several levels of the late Pleistocene cover Abyssal Plain of the Ionian Sea and interpreted as megatorbiditi triggered by megatsunami. The most recent of these bodies has been placed by several authors, in relation to the collapse of the volcanic Santorini or Etna or the destructive earthquake of Crete in 365 AD [Poland et al., 2013]. Bodies of considerable "transparent" thick (15-30 m) and extension (> 100 km2), also have been reported in the north-western Ionian Sea and interpreted as accumulations debritici late Pleistocene-Holocene, presumably seismic-induced [Rebesco et al. , 2009]. ). The presence of bodies with similar seismic-stratigraphic character is also confirmed in the neighboring basinal areas, separated by embankments and morphological high with recent evidence of mass movements and in place. His very position chrono-stratigraphic the last "debritici deposits" in the various sectors of suggests, as in the southern Ionian Sea, a common trigger mechanism and regional scale. The sparker sections highlight, for the most recent portion of the Pleistocene succession, other bodies "transparent", stacked in multiple layers (at least 3) and associated with liquefaction facilities and extrusion interpreted as sismiti. Cyclicality and the regional scale of the analyzed debritici events (transparent bodies) and the subsequent liquefaction and extrusion suggest their ignition by seismic shaking, compatible with the recent activities of transpressive dell'Amendolara system. Bibliography Poland, A., Bonatti, E., Camerlenghi, A., Lucchi, GL, Baskets, G. Gasperini, L., (2013). Mediterranean megaturbidite triggered by the AD 365 Crete earthquake and tsunami. Scientific Reports, 3, 1285, doi: 10.1038 / srep01285. Rebesco, M., Neagu, RC, Cuppari, A., Mute, F., Accettella, D., Dominici, R., Cova, A. Romano, C., Caburlotto, A., (1999). Morphobathimetric analysis and evidence of submarine mass movements in the western Gulf of Taranto (margin Calabria, Ionian Sea). Inter. Jou. of Earth Sci., 98, 791-805. Mediterranean megaturbidite triggered by the AD 365 Crete earthquake and tsunami. Scientific Reports, 3, 1285, doi: 10.1038 / srep01285. Rebesco, M., Neagu, RC, Cuppari, A., Mute, F., Accettella, D., Dominici, R., Cova, A. Romano, C., Caburlotto, A., (1999). Morphobathimetric analysis and evidence of submarine mass movements in the western Gulf of Taranto (margin Calabria, Ionian Sea). Inter. Jou. of Earth Sci., 98, 791-805. Mediterranean megaturbidite triggered by the AD 365 Crete earthquake and tsunami. Scientific Reports, 3, 1285, doi: 10.1038 / srep01285. Rebesco, M., Neagu, RC, Cuppari, A., Mute, F., Accettella, D., Dominici, R., Cova, A. Romano, C., Caburlotto, A., (1999). Morphobathimetric analysis and evidence of submarine mass movements in the western Gulf of Taranto (margin Calabria, Ionian Sea). Inter. Jou. of Earth Sci., 98, 791-805.
Original languageItalian
Number of pages1
Publication statusPublished - 2013

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