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A two-step process for the reflooding of the Mediterranean after the Messinian Salinity Crisis ArchiMer
Bache, Francois; Popescu, Speranta-maria; Rabineau, Marina; Gorini, Christian; Suc, Jean-pierre; Clauzon, Georges; Olivet, Jean-louis; Rubino, Jean-loup; Melinte-dobrinescu, Mihaela Carmen; Estrada, Ferran; Londeix, Laurent; Armijo, Rolando; Meyer, Bertrand; Jolivet, Laurent; Jouannic, Gwenael; Leroux, Estelle; Aslanian, Daniel; Dos Reis, Antonio Tadeu; Mocochain, Ludovic; Dumurdzanov, Nikola; Zagorchev, Ivan; Lesic, Vesna; Tomic, Dragana; Cagatay, M. Namik; Brun, Jean_pierre; Sokoutis, Dimitrios; Csato, Istvan; Ucarkus, Gulsen; Cakir, Ziyadin.
The Messinian Salinity Crisis is well known to have resulted from a significant drop of the Mediterranean sea level. Considering both onshore and offshore observations, the subsequent reflooding is generally thought to have been very sudden. We present here offshore seismic evidence from the Gulf of Lions and re-visited onshore data from Italy and Turkey that lead to a new concept of a two-step reflooding of the Mediterranean Basin after the Messinian Salinity Crisis. The refilling was first moderate and relatively slow accompanied by transgressive ravinement, and later on very rapid, preserving the subaerial Messinian Erosional Surface. The amplitude of these two successive rises of sea level has been estimated at =500 similar to m for the first rise and...
Tipo: Text Palavras-chave: Paleo environmental changes; Miocene pliocene boundary; Section marche province; Earliest zanclean age; Desiccated deep basin; Di tetto formations; Northern apennines; Southern France; Decic basin; Depositional environments.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00076/18774/16490.pdf
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Active fault segments along the North Anatolian Fault system in the Sea of Marmara: implication for seismic hazard ArchiMer
Gasperini, Luca; Stucchi, Massimiliano; Cedro, Vincenzo; Meghraoui, Mustapha; Ucarkus, Gulsen; Polonia, Alina.
A new analysis of high-resolution multibeam and seismic reflection data, collected during several oceanographic expeditions starting from 1999, allowed us to compile an updated morphotectonic map of the North Anatolian Fault below the Sea of Marmara. We reconstructed kinematics and geometries of individual fault segments, active at the time scale of 10 ka, an interval which includes several earthquake cycles, taking as stratigraphic marker the base of the latest marine transgression. Given the high deformation rates relative to sediment supply, most active tectonic structures have a morphological expression at the seafloor, even in presence of composite fault geometries and/or overprinting due to mass-wasting or turbidite deposits. In the frame of the...
Tipo: Text Palavras-chave: North Anatolian fault; Sea of Marmara; Earthquakes; Active fault segments; Marine geophysics; Seismic hazard.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00684/79575/82244.pdf
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MARNAUT 2017. Dive report ArchiMer
Henry, Pierre; Tryon, Mike; Bourlange, Sylvain; Geli, Louis; Zitter, Tiphaine; Bouloubassi, Ioanna; Burnard, Pete; Cagatay, M Namik; Chevalier, Nicolas; Gasperini, Luca; Gorur, Naci; Gerigk, Christoph; Leveque, Claude; Le Pichon, Xavier; Lopez-garcia, Purification; Massol, Alain; Mercier De Lepinay, Bernard; Natalin, Boris; Ozeren, Sinan; Pierre, Catherine; Ritt, Benedicte; Sengor, Am Celal; Ucarkus, Gulsen.
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Ano: 2007 URL: http://archimer.ifremer.fr/doc/00398/50962/51714.pdf
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The region of the Strandja Sill (North Turkey) and the Messinian events ArchiMer
Suc, Jean-pierre; Gillet, Herve; Cagatay, M. Namik; Popescu, Speranta-maria; Lericolais, Gilles; Armijo, Rolando; Melinte-dobrinescu, Mihaela Carmen; Sen, Sevket; Clauzon, Georges; Sakinc, Mehmet; Zabci, Cengiz; Ucarkus, Gulsen; Meyer, Bertrand; Cakir, Ziyadin; Karakas, Cagil; Jouannic, Gwenael; Macalet, Rodica.
The two sides of the Strandja Sill show a highly discontinuous stratigraphic succession since the Late Oligocene. This area, together with the Sea of Marmara Basin, is usually proposed as the gateway for the Paratethyan freshwaters and organisms that constituted the Lago Mare facies in the Mediterranean Sea during the Messinian Salinity Crisis (MSC). Our investigations involving new field observations and datings, together with previous studies, suggest that the sill has possibly experienced such a connection at around 8 Ma, i.e. significantly before the crisis. The proposal of a sea-level drop of the Black Sea before 7 Ma is not supported by our data on dinoflagellate cysts. Consistency of calcareous nannofossil succession at DSDP Site 380 is reinforced,...
Tipo: Text Palavras-chave: Mediterranean-Paratethys connection; Onshore-offshore stratigraphy; Messinian Salinity Crisis; Erosion; Fluvial network.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00251/36217/34768.pdf
Registros recuperados: 4
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