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Découverte de la surface d’érosion messinienne onshore/offshore dans deux lieux clés : le Promontoire Baléares (Ibiza) et la marge est-sarde (Orosei) ArchiMer
Maillard, Agnès; Gaullier, Virginie; Lézin, Carine; Chanier, Frank; Odonne, Francis; Lofi, Johanna.
As the Messinian sea-level draw down associated with the Messinian Salinity Crisis is still questioned, we propose to show that the widely spread erosion surface affecting the Mediterranean margins is indeed linked to an exondation demonstrated from offshore and onshore data. Our study presents a comprehensive onshore to offshore correlation of the Messinian erosional surface. It is focused on small drainage systems or interfluve areas, outside of evaporite basins or incised canyons, where the Messinian erosion had not yet been studied previously: around Ibiza on the Balearic Promontory and around Orosei on the Eastern Sardinian margin, Tyrrhenian Basin, both areas where new offshore data were recently acquired. We show that the late Messinian erosion...
Tipo: Text Palavras-chave: Crise de salinité messinienne; Méditerranée nord-occidentale; Surface d' Érosion; Ibiza; Marge est-sarde; Messinian Salinity Crisis (MSC); Northwestern Mediterranean; Erosion surface; Ibiza; Eastern Sardinian margin.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00622/73392/72608.pdf
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The Catalan margin during the Messinian Salinity Crisis: Physiography, morphology and sedimentary record ArchiMer
Garcia, Marga; Maillard, Agnès; Aslanian, Daniel; Rabineau, Marina; Alonso, Belen; Gorini, Christian; Estrada, Ferran.
The Messinian Salinity Crisis (MSC) drastically affected the physiography, morphology and sedimentation all along the Mediterranean area at the end of the Miocene. This paper presents an analysis of the effects of the MSC on the Catalan continental margin, based on a broad database of seismic reflection profiles from the oil industry and academy. We study the sedimentary processes and their controlling factors and the correlation with the nearby and well-known Gulf of Lions. Because of the complexity of the MSC, we define the Margin Erosion Surface/Top Erosion Surface (MES/TES) as the surface marking the end of the Messinian event, which allows differentiating three domains along the Catalan margin: the Creus, Girona and Barcelona domains, separated by the...
Tipo: Text Palavras-chave: Valencia Basin; Catalan Margin; Messinian Salinity Crisis; Sea level; Drainage systems.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00041/15196/13319.pdf
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