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| Gaill, Françoise; Ballu, V.; Cannat, M.; Crawford, W.; Dyment, J.; Escartin, J.; Fouquet, Yves; Goslin, J.; Reverdin, G.; Sarradin, Pierre-marie; Tarits, P.; Andreani, M.; Bonnivard, E.; Bucas, Karenn; Burgaud, G.; Cambon-bonavita, Marie-anne; Cueff, Valerie; Durand, C.; Gros, O.; Hamel, G.; Henriques, M.; Hois, E.; Ildefonse, B.; Konn, Cecile; Le Bris, Nadine; Le Guyader, H.; Ravaux, J.; Shilito, B.; Toullec, J.y.; Zbinden, M.. |
| Tipo: Text |
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| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00385/49650/50163.pdf |
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| Escartin, J.; Mevel, C.; Petersen, S.; Bonnemains, D.; Cannat, M.; Andreani, M.; Augustin, N.; Bezos, A.; Chavagnac, V.; Choi, Y.; Godard, M.; Haaga, K.; Hamelin, C.; Ildefonse, B.; Jamieson, J.; John, B.; Leleu, T.; Macleod, C. J.; Massot-campos, M.; Nomikou, P.; Olive, J. A.; Paquet, M.; Rommevaux, C.; Rothenbeck, M.; Steinfuhrer, A.; Tominaga, M.; Triebe, L.; Campos, R.; Gracias, N.; Garcia, R.. |
| Microbathymetry data, in-situ observations, and sampling along the 13°20'N and 13°20'N oceanic core complexes (OCCs) reveal mechanisms of detachment fault denudation at the seafloor, links between tectonic extension and mass wasting, and expose the nature of corrugations, ubiquitous at OCCs. In the initial stages of detachment faulting and high angle fault scarps show extensive mass-wasting that reduces their slope. Flexural rotation further lowers scarp slope, hinders mass wasting, resulting in morphologically complex chaotic terrain between the breakaway and the denuded corrugated surface. Extension and drag along the fault plane uplifts a wedge of hangingwall material (apron). The detachment surface emerges along a continuous moat that sheds rocks and... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00376/48702/49049.pdf |
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| Escartin, J.; Barreyre, T.; Cannat, M.; Garcia, R.; Gracias, N.; Deschamps, A.; Salocchi, A.; Sarradin, Pierre-marie; Ballu, V.. |
| We have reviewed available visual information from the seafloor, and recently acquired microbathymetry for several traverses across the Lucky Strike segment, to evaluate the distribution of hydrothermal activity. We have identified a new on-axis site with diffuse flow, Ewan, and an active vent structure ∼1.2 km from the axis, Capelinhos. These sites are minor relative to the Main field, and our total heatflux estimate for all active sites (200–1200 MW) is only slightly higher than previously published estimates. We also identify fossil sites W of the main Lucky Strike field. A circular feature ∼200 m in diameter located on the flanks of a rifted off-axis central volcano is likely a large and inactive hydrothermal edifice, named Grunnus. We find no... |
| Tipo: Text |
Palavras-chave: Hydrothermalism; Mid-ocean ridge; Heat flux; Faulting; Oceanic crust; Mid-Atlantic Ridge. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00281/39241/37812.pdf |
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