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| Le Roy, Pascal; Gracia-garay, Claire; Guennoc, Pol; Bourillet, Jean-francois; Reynaud, Jean-yves; Thinon, Isabelle; Kervevan, Patrick; Paquet, Fabien; Menier, David; Bulois, Cedric. |
| The geology of the Channel Western Approaches is a key to understand the post-rift evolution of the NW European continental margin in relation with the Europe/Africa collision. Despite considerable evidence of Tertiary tectonic inversion throughout the Channel basin, the structures and amplitudes of the tectonic movements remain poorly documented across the French sector of the Western Approaches. The effect of the tectonic inversion for the evolution of the "Channel River", the major system that flowed into the English Channel during the Plio-Quaternary eustatic lowstands, also needs to be clarified. Its drainage basin was larger than the present-day English Channel and constituted the source of terrigenous fluxes of the Armorican and Celtic deep sea... |
| Tipo: Text |
Palavras-chave: English Channel; Western Approaches basins; Cenozoic; Palaeovalley; Seismic stratigraphy; Tectonic inversion. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00056/16706/15776.pdf |
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| Reynaud, Jean-yves; Lauriat-rage, Agnès; Tessier, Bernadette; Neraudeau, Didier; Braccini, Eric; Carriol, René-pierre; Clet-pellerin, Martine; Moullade, Michel; Lericolais, Gilles. |
| Macro- and micro-faunas are reported from six gravity cores collected at a mean depth of 150 m in the surficial deposits of the Kaiser sand bank in the Southern Western Channel Approaches. These are bivalves (mainly), gastropods, echinids, crustaceans and foraminifers. These fauna present a very rich association of numerous, well preserved species from various ecological settings. Such an association is commonly reported from the continental shelf of the last transgressive cycle. In addition, the sediment comprises two imported faunal associations. The first one corresponds to thanatocaenoses of Pliocene/lowermost Pleistocene and Weichselian age, reworked respectively from the underlying celtic incised valley fills and the Celtic Sand Banks. The absence of... |
| Tipo: Text |
Palavras-chave: Continental shelf; Thanatofauna; Sea level; Reworking; Transport. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00146/25682/23843.pdf |
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