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Auteurs :
text | Université de Bretagne Occidentale | 2021-03-17
In deep-sea hydrothermal vents, the mixing between hot, acidic and anoxic hydrothermal fluid with seawater leads to the formation of hydrothermal chimneys. These are porous structures whose mineralogical composition changes over t...
Auteurs :
text | Institut de Physique du Globe de Paris | 2013-05-30
Detailed submarine exploration shows a diversity of hydrothermal sites in terms of geology, minerals, fluids and biology. High0resolution, near0seafloor magnetic surveys have been undertaken on various basalt0hosted or ultramafic0...
Auteurs :
text | Gauthier-villars/editions Elsevier | 1998-07
The hydrothermal environment is characterised, among other things, by a high metal concentration, related to the convective sea-water circulation inside the oceanic crust and its interaction with basaltic rocks. The biological com...
Auteurs :
text | Gauthier-villars | 1995-01
70 hydrothermal sites were observed during the 23 dives of the French submersible Nautile (''Naudur'' cruise, December 1993), at 17-degrees-19-degrees-S on the East Pacific Rise. Large vent-animal communities are present around th...
Auteurs :
text | Gauthier-villars | 1994-12
69 new hydrothermal sites were discovered during the Naudur diving cruise. Dives were conducted between 17 degrees 5 and 18 degrees 40'5 on four segments showing marked contrast in morphology, volcanic, tectonic and hydrothermal a...
Auteurs :
text | Université de Bretagne Occidentale | 2003-10-03
Cultural and molecular approaches were used to analyse the microbial assemblages associated to the deep-sea hydrothermal vent polychaete worms of the family Alvinellidae. In a first part of the work, the populations associated to ...
Etude et rapport | BRGM - Département Eau / Antenne Eau Minérale. 45060 ORLÉANS | 1998
La présente étude, engagée dans le cadre des actions de Service public du BRGM (fiche 98-J-102), concerne la réalisation d'un document de synthèse sur l'ensemble des sources d'eau minérale appartenant à l'État. Réalisée à la deman...
Auteurs :
Livre | BRGM. PARIS | 1975
Les grands traits de la classification chimique des eaux minérales datent de Jacquot et Willm (1894). L'adoption d'un point de vue géologique pour l'étude des cinq éléments constitutifs des minérales (eau, gaz, température, minéra...
Auteurs :
text | Université de Bretagne Occidentale | 2008-12-09
Since the discovery of oceanic hydrothermal vents, microbial diversity of this extreme environment was studied using both cultivation and molecular approaches. In this study the microbial diversity of active chimney from both TAG ...
Auteurs :
text | Université de Bretagne occidentale | 2016-12-15
Deprived of light, the deep-sea hydrothermal vents are extremes ecosystems sustained by micobial chemosynthesis. These environments are colonized by animal species living in close relationships with these chemoautotrophic micro-or...