Consulta: creatorFacets:"Fourre, E."
Registros recuperados: 3
Data/hora: 09/06/2024 13:53:16

High production of H-2 and CH4 and abiotic hydrocarbons in ultramafic-hosted hydrothermal systems on the Mid-Atlantic Ridge
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Charlou, Jean-luc; Donval, Jean-pierre; Konn, Cecile; Ondreas, Helene; Fouquet, Yves; Jean-baptiste, P.; Fourre, E.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00023/13408/10480.pdf

Organic, Gas, and Element Geochemistry of Hydrothermal Fluids of the Newly Discovered Extensive Hydrothermal Area in the Wallis and Futuna Region (SW Pacific)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Konn, Cecile; Donval, Jean-pierre; Guyader, Vivien; Roussel, Erwan; Fourre, E.; Jean-baptiste, P.; Pelleter, Ewan; Charlou, Jean-luc; Fouquet, Yves.
Two newly discovered hydrothermal vent fields of the Wallis and Futuna region, Kulo Lasi and Fatu Kapa, were sampled for fluid geochemistry. A great geochemical diversity was observed and assigned to the diversity of lithologies as well as the occurrence of various processes. Kulo Lasi fluids likely formed by interaction with fresh volcanic rocks, phase separation, and mixing with magmatic fluid. Conversely, the geochemistry of the Fatu Kapa fluids would be mostly due to water/felsic lavas reactions. In terms of organic geochemistry, fluids from both fields were found to be enriched in formate, acetate, and semivolatile organic compounds (SVOCs): n-alkanes, n-fatty acids, and polyaromatic hydrocarbons (PAHs). Concentrations of SVOCs reached a few ppb at...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00431/54245/55571.pdf

Extensive hydrothermal activity revealed by multi-tracer survey in the Wallis and Futuna region (SW Pacific)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Konn, Cecile; Fourre, E.; Jean-baptiste, P.; Donval, Jean-pierre; Guyader, Vivien; Birot, Dominique; Alix, Anne-sophie; Gaillot, Arnaud; Perez, Florian; Dapoigny, A.; Pelleter, Ewan; Resing, J. A.; Charlou, Jean-luc; Fouquet, Yves.
The study area is close to the Wallis and Futuna Islands in the French EEZ. It exists on the western boundary of the fastest tectonic area in the world at the junction of the Lau and North-Fiji basins. At this place, the unstable back-arc accommodates the plate motion in three ways: (i) the north Fiji transform fault, (ii) numerous unstable spreading ridges, and (iii) large areas of recent volcanic activity. This instability creates bountiful opportunity for hydrothermal discharge to occur. Based on geochemical (CH4, TDM, 3He) and geophysical (nephelometry) tracer surveys: (1) no hydrothermal activity could be found on the Futuna Spreading Center (FSC) which sets the western limit of hydrothermal activity; (2) four distinct hydrothermal active areas were...
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00347/45848/45505.pdf