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| Mercier De Lepinay, B. |
| In November/December 1987, the R/V Jean-Charcot conducted geophysical surveys (Seabeam bathymetry, single-channel seismic reflection, gravimetry and magnetism) along the northern caribbean boundary, between Cuba, Haiti and Jamaica (Pointe-a-Pitre/Santiago de Cuba/Fort-de-France). During that cruise, we focused our attention on the following themes: the transition between typical oceanic crust and thinned continental crust associated with early rifting; the structures associated with the Oriente (Bartlett) Transform Fault south of Cuba; and the eastward continuation of the Oriente Fault north of Hispaniola. |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37947/36028.pdf |
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| Deverchere, Jacques; Yelles, K; Domzig, Anne; Mercier De Lepinay, B; Bouillin, J.p.; Gaullier, V; Bracene, R; Calais, E; Savoye, Bruno; Kherroubi, A; Le Roy, P; Pauc, H; Dan, Gabriela. |
| [1] We investigate the active seismogenic fault system in the area of the 2003 Mw 6.9 Boumerdes earthquake, Algeria, from a high-resolution swath bathymetry and seismic survey. A series of 5 main fault-propagation folds similar to20-35 km long leave prominent cumulative escarpments on the steep slope and in the deep basin. Fault activity creates Plio-Quaternary growth strata within uplifted areas such as a rollover basin on the slope and piggyback basins in the deep ocean. Most thrusts turn to fault-propagation folds at the sub-surface and depict ramp-flat trajectories. We find that the two main slip patches of the 2003 Mw 6.9 Boumerdes earthquake are spatially correlated to two segmented cumulative scarps recognized on the slope and at the foot of the... |
| Tipo: Text |
Palavras-chave: Continental margin; Sismicity; Tectonophysics. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-743.pdf |
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| Bourgeois, J; Renard, V; Michaud, F; Mercier De Lepinay, B. |
| The data of the Seamat Cruise indicate that: a) the junction between the East Pacific Rise and the Rivera Fracture Zone is located 165 km seaward the Acapulco Trench axis at 18 degree 30'N latitude and 106 degree 15'W longitude; and b) the East Pacific Rise axial ridge connects the Rivera Transverse Ridge trough an overshot ridge. This situation makes the Rivera Fracture Zone located eastward of the junction progressively inactive and documents a westward jump of the junction. |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37951/36032.pdf |
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