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| Beaudouin, Célia; Jouet, Gwenael; Suc, Jean-pierre; Berne, Serge; Escarguela, Gilles. |
| The composition of the glacial vegetation of southern French plains has been a matter of debate for several decades. Vegetation is considered as steppic according to French and Spanish lacustrine pollen records whereas cave deposits suggest the presence of mesothermophilous trees through the Last Glacial Maximum. In our paper, we display new palynological records from marine sediments of the Gulf of Lions. They indicate the presence of Abies, Picea and deciduous Quercus in the Gulf of Lions, certainly located in the drainage basins of the Pyreneo-Languedocian rivers. These populations that were sensitive to short climatic events during Marine Isotopic Stage 2 could have been linked to northeastern Spanish and southeastern French relicts already evidenced... |
| Tipo: Text |
Palavras-chave: Mediterranean Sea; Pleistocene; Climate; Vegetation. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2804.pdf |
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| Dennielou, Bernard; Huchon, Agnès; Beaudouin, Célia; Berne, Serge. |
| The fining upward trend commonly described on levees of turbidite systems can be either attributed to changes in the sediment supply (external forcing = allocyclic) or changes in the spillover processes related to the growth of the levee (internal forcing = autocyclic). However the real causes remain speculative and difficult to demonstrate. Knowledge of vertical change in flow velocity (or grain size) in turbidity currents, of the turbidity current's height, as well as the growth rate of a levee are theoretically sufficient to describe the evolution of the grain size of a leveed turbidite sequence deposited by spillover processes. A piston core (MD99-2344) retrieved on the right levee of the Petit-Rhone neofan, sampled an 8.50 m long turbidite sequence... |
| Tipo: Text |
Palavras-chave: Allocyclicity; Amocyclicity; Grain size; Channel levee; Turbidite. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2311.pdf |
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