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| 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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| Wang, Haozhuang; Lo Iacono, Claudio; Wienberg, Claudia; Titschack, Jürgen; Hebbeln, Dierk. |
| Cold-water corals (CWCs) are widely distributed in the entire Alboran Sea (western Mediterranean Sea), but only along the Moroccan margin they have formed numerous coral mounds, which are constrained to the West and the East Melilla CWC mound provinces (WMCP and EMCP). While information already exists about the most recent development of the coral mounds in the EMCP, the temporal evolution of the mounds in the WMCP was unknown up to the present. In this study, we present for the first time CWC ages obtained from four sediment cores collected from different mounds of the WMCP, which allowed to decipher their development since the last deglaciation. Our results revealed two pronounced periods of coral mound formation. The average mound aggradation rates were... |
| Tipo: Text |
Palavras-chave: Cold-water coral mounds; Coral mound formation; Mound aggradation rate; Last deglaciation; Internal waves; Levantine Intermediate Water; Alboran Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00483/59512/83481.pdf |
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| Gràcia, Eulàlia; Grevemeyer, Ingo; Bartolomé, Rafael; Perea, Hector; Martínez-loriente, Sara; Gómez De La Peña, Laura; Villaseñor, Antonio; Klinger, Yann; Lo Iacono, Claudio; Diez, Susana; Calahorrano, Alcinoe; Camafort, Miquel; Costa, Sergio; D’acremont, Elia; Rabaute, Alain; Ranero, César R.. |
| Large continental faults extend for thousands of kilometres to form boundaries between rigid tectonic blocks. These faults are associated with prominent topographic features and can produce large earthquakes. Here we show the first evidence of a major tectonic structure in its initial-stage, the Al-Idrissi Fault System (AIFS), in the Alboran Sea. Combining bathymetric and seismic reflection data, together with seismological analyses of the 2016 Mw 6.4 earthquake offshore Morocco – the largest event ever recorded in the area – we unveil a 3D geometry for the AIFS. We report evidence of left-lateral strike-slip displacement, characterise the fault segmentation and demonstrate that AIFS is the source of the 2016 events. The occurrence of the Mw 6.4 earthquake... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00513/62427/66705.pdf |
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| Martinez-loriente, Sara; Gracia, Eulalia; Bartolome, Rafael; Sallares, Valenti; Connors, Christopher; Perea, Hector; Lo Iacono, Claudio; Klaeschen, Dirk; Terrinha, Pedro; Jose Danobeitia, Juan; Zitellini, Nevio. |
| Recently acquired high-resolution multichannel seismic profiles together with bathymetric and sub-bottom profiler data from the external part of the Gulf of Cadiz (Iberia-Africa plate boundary) reveal active deformation involving old (Mesozoic) oceanic lithosphere. This area is located 180 km offshore the SW Iberian Peninsula and embraces the prominent NE-SW trending Coral Patch Ridge, and part of the surrounding deep Horseshoe and Seine abyssal plains. E-W trending dextral strike-slip faults showing surface deformation of flower-like structures predominate in the Horseshoe Abyssal Plain, whereas NE-SW trending compressive structures prevail in the Coral Patch Ridge and Seine Hills. Although the Coral Patch Ridge region is characterized by subdued seismic... |
| Tipo: Text |
Palavras-chave: Multichannel seismics; Fault-bend folds; Blind thrusts; Strike-slip faults; Seismic hazard assessment; Iberia-Africa boundary. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37513/36759.pdf |
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