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| Auffret, Gerard; Sichler, Bertrand; Coleno, B. |
| Critical speeds for erosion, transport and deposition of sedimentary particles and prevailing bottom currents intensities are in such a range that the textural properties of the sediment silt fraction may be correlated to the intensity of the deep circulation. On the other hand, the long axis of the sediment magnetic susceptibility ellipsoid, should be aligned according to the current flow. These hypotheses have been positively tested in five abyssal areas. The authors then apply textural studies to the study of Cenozoic deep water circulation in two continental margin areas (Bay of Biscay and Western mediterranean, DSDP Site 400 and Site 372). The results are in good agreement with informations provided by micropaleontological and geochemical... |
| Tipo: Text |
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| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/1981/publication-5358.pdf |
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| Auffret, Gerard; Auzende, Jean-marie; Cousin, Michel; Coutelle, Alain; Dobson, M; Geoghegan, M; Masson, D.; Rolet, J; Vaillant, P. |
| The aim of the joint French-British CYAPORC submersible cruise was the exploration and sampling of the Porcupine and Goban Escarpments. A paleozoic mesozoic sedimentary cover has been evidenced abov ea caledonian or older cristalline basement on the Porcupine scarp. On the Goban scarp, the observed outcrops are mainly lower Cretaceous carbonates overlying paleozoic sandstones |
| Tipo: Text |
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| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00184/29489/27853.pdf |
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| Eynaud, Frederique; Malaize, Bruno; Zaragosi, Sebastien; De Vernal, Anne; Scourse, James; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E.; Penaud, Aurelie; Toucanne, Samuel; Turon, Jean-louis; Auffret, Gerard. |
| During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well expressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European ice sheets and glaciers. Quantitative... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00086/19762/20100.pdf |
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