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| Registros recuperados: 10 | |
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| Auzende, Jean-marie; Bonnin, Jean; Olivet, Jean-louis. |
| Based on the study of some seismic-reflection profiles, we demonstrate that the identified sedimentary units show a structural anomaly at the bottom of the North-African continental margin compared to the situation observed on the other margins of the western Mediterranean basin: all the deep Messinian and infra-Messinian deposits are subjected to a flexure when reaching the North-African margin; the created depression is filled by the plio-quaternary deposits. This observation, set back in the geodynamic context of the western Mediterranean, leads to the following interpretation: the North-African margin is a very active margin at a very early evolutional stage. The abnormal structure of the gravity field in the considered region confirms this... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1975 |
URL: http://archimer.ifremer.fr/doc/1975/publication-5473.pdf |
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| Auzende, Jean-marie; Olivet, Jean-louis; Bonnin, Jean. |
| Some seismic and magnetic profiles carried out south of the Big Bank of Newfoundland during the Noratlante cruise show a fracture zone which collapses the continental margin and continues to the south-east towards the Azores. This fracture zone proves evidence of the drift movement of Africa towards the east during the Jurassic or Trias opening of the Atlantic. From the south-east corner of the Big Bank, the fracture zone supports a sediment ridge formed by the underflows and which continues to the meridian 430 West. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1970 |
URL: http://archimer.ifremer.fr/doc/1970/publication-4877.pdf |
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| Olivet, Jean-louis; Auzende, Jean-marie; Bonnin, Jean. |
| The Alboran Sea is made up of two distinct basins. The first one has approximately the shape of a lozenge, surrounded by the arc of Gibraltar and the two thresholds (northern and southern) of Alboran. It is about a hundred kilometres at its largest width. Its average depth is only 1 300 m, that is 1 000 m less than in the Algero-balearic and Provencal basins. The second one is elongated, deeper (1 800 to 2 000 m) and is widely open to the east and northeast on the algero-balearic basin. The route to this latter basin is made through a more marked slope of a gradient of around 500 m and oriented NNE-SSW. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-5052.pdf |
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| Registros recuperados: 10 | |
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