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| Fouquet, Yves; Barriga, F; Charlou, Jean-luc; Elderfield, H; German, C.r; Ondreas, Helene; Parson, L; Radford-knoery, Joel; Relvas, J; Ribeiro, A; Schultz, A; Apprioual, R; Cambon, P; Costa, I; Donval, Jean-pierre; Douville, E; Landure, Jy; Normand, A; Pelle, H; Ponsevera, E. |
| Tipo: Text |
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| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00070/18133/15681.pdf |
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| Marques, Ana Filipa A.; Barriga, F; Chavagnac, V; Fouquet, Yves. |
| Petrological, geochemical, and Nd isotopic analyses have been carried out on rock samples from the Rainbow vent field to assess the evolution of the hydrothermal system. The Rainbow vent field is an ultramafic-hosted hydrothermal system located on the Mid-Atlantic Ridge characterized by vigorous high-temperature venting (similar to 365 degrees C) and unique chemical composition of fluids: high chlorinity, low pH and very high Fe, and rare earth element (REE) contents (Douville et al., Chemical Geology 184:37-48, 2002). Serpentinization has occurred under a low-temperature (< 270 degrees C) retrograde regime, later overprinted by a higher temperature sulfide mineralization event. Retrograde serpentinization reactions alone cannot reproduce the reported... |
| Tipo: Text |
Palavras-chave: Rainbow vent field; Mid Atlantic Ridge; Nd isotope; Serpentinite; Massive sulphide. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1557.pdf |
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