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| Bache, François; Gorini, C; Olivet, Jean-louis; Rabineau, Marina; Rubino, J.l.; Mauffret, A; Lofi, J. |
| The continental shelf of the "Golfe du Lion" (Gulf of Lions) has been considered for a long time as a privileged place for the study of passive margins. However, the model usually adopted to explain the formation of this type of margin does not apparently fit the subsidence history of the Gulf of Lions. Indeed, the evolution of this basin is characterized by a high subsidence rate, comparable to those of Atlantic margins, although it is only 30 MY old. Previous studies show anomalies in subsidence rate in the Gulf of Lions (Bessis and Burrus, 1986; Bessis, 1984). Seismic data from a dense grid of seismic reflection profiles acquired by the petroleum industry (RM96, LIGO and HR Total profiles) and by IFREMER (Marion and Calmar campaigns) provided by the... |
| Tipo: Text |
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| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/acte-4683.pdf |
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| Mauffret, A; Jany, I. |
| During the Seacarib Cruise the region south of the Greater Antilles (Hispaniola and Puerto Rico) has been investigated. During this survey we recorded continuously Seabeam, magnetic, gravity and seismic digitized data. The Muertos Trough disappears toward the west where the Beata Ridge reaches the trough. The volcanic rocks outcropping in the Southern Peninsula of Haiti and those of Beata Ridge have the same composition. These oceanic rocks and the emergence of the Muertos prism suggest a collision between Beata Ridge indenter and the northern block of Hispaniola. The Caribbean Plate has an eastward motion relative to the America Plate; however the crushing of the northern Hispaniola Block between two jaws, Beata Ridge and Bahamas Bank, leads to the... |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37928/36009.pdf |
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| Lancelot, Y; Froger, V; Cheminee, J L; Galisson, H; Larson, R; Mauffret, A; Schlanger, So; Sclater, J G. |
| The Mesopac Cruise was the first multichannel seismic study of the western basins of the Pacific Plate. It was concentrated in the Nauru Basin and in the western area of the Central Pacific Basin. Profiles were calibrated with drilling results from DSDP Sites 462 and 169. For the first time one could observe reflectors within the Cretaceous volcanic complex down to approximately equals 8.5 seconds. Profiles did not allow direct observation of the top of the oceanic crust. After correcting for the load on top of the oceanic crust, results suggest that it cannot lie much deeper than those reflectors. If the oceanic crust lies only a few hundred meters beneath the 2.4 km thick complex, it would be right on the normal thermal subsidence curve corresponding to... |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37906/35987.pdf |
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