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Crustal structure of the Ionian basin and eastern Sicily margin: results from a wide-angle seismic survey. ArchiMer
Dellong, David; Klingelhoefer, Frauke; Kopp, Heidrun; Graindorge, David; Margheriti, Lucia; Moretti, Milena; Murphy, Shane; Gutscher, Marc-andre.
In the Ionian Sea (Central Mediterranean) the slow convergence between Africa and Eurasia results in the formation of a narrow subduction zone. The nature of the crust of the subducting plate remains debated and could represent the last remnants of the Neo-Tethys ocean. The origin of the Ionian basin is also under discussion, especially concerning the rifting mechanisms as the Malta Escarpment could represent a remnant of this opening. This subduction retreat toward the south-east (motion occurring since the last 35 Ma) but is confined to the narrow Ionian Basin. A major lateral slab tear fault is required to accommodate the slab roll-back. This fault is thought to propagate along the eastern Sicily margin but its precise location remains controversial....
Tipo: Text Palavras-chave: Ionian basin; Crustal structure; Wide-angle seismic; Geodynamic; Mediterranean; Malta Escarpment.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00427/53885/54956.pdf
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Geomorphic evolution of the Malta Escarpment and implications for the Messinian evaporative drawdown in the eastern Mediterranean Sea ArchiMer
Micallef, Aaron; Camerlenghi, Angelo; Georgiopoulou, Aggeliki; Garcia-castellanos, Daniel; Gutscher, Marc-andre; Lo Iacono, Claudio; Huvenne, Veerle A. I.; Mountjoy, Joshu J.; Paull, Charles K.; Le Bas, Timothy; Spatola, Daniele; Facchin, Lorenzo; Accettella, Daniela.
Carbonate escarpments are submarine limestone and dolomite cliffs that have been documented in numerous sites around the world. Their geomorphic evolution is poorly understood due to difficulties in assessing escarpment outcrops and the limited resolution achieved by geophysical techniques across their steep topographies. The geomorphic evolution of carbonate escarpments in the Mediterranean Sea has been influenced by the Messinian salinity crisis (MSC). During the MSC (5.97-533 Ma), the Mediterranean Sea became a saline basin due to a temporary restriction of the Atlantic-Mediterranean seaway, resulting in the deposition of more than one million cubic kilometres of salt. The extent and relative chronology of the evaporative drawdown phases associated to...
Tipo: Text Palavras-chave: Malta Escarpment; Geomorphic evolution; Submarine canyon; Palaeoshoreline; Sea level drawdown; Messinian salinity crisis.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00485/59686/83482.pdf
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