Recherche documentaire
Trier par :
-
De Prunele, Alexis / Ruffine, Livio / Riboulot, Vincent / Peters, Carl A. / Croguennec, Claire / Guyader, Vivien / Pape, Thomas / Bollinger, Claire / Bayon, Germain / Caprais, Jean-claude / Germain, Yoan / Donval, Jean-pierre / Marsset, Tania / Bohrmann, Gerhard / Geli, Louis / Rabiu, Abdulkarim / Lescanne, Marc / Cauquil, Eric / Sultan, Nabil - 2017The Niger Delta is one of the largest hydrocarbon basin offshore Africa and it is well known for the presence of active pockmarks on the seabed. During the Guineco-MeBo cruise in 2011, long cores were taken from a pockmark cluster in order to investigate the state of its current activity. Gas...Contributeur (s):
-
Croguennec, Claire / Ruffine, Livio / Dennielou, Bernard / Baudin, François / Caprais, Jean-claude / Guyader, Vivien / Bayon, Germain / Brandily, Christophe / Le Bruchec, Julie / Bollinger, Claire / Germain, Yoan / Droz, Laurence / Babonneau, Nathalie / Rabouille, Christophe - 2016On continental margins, sulfate reduction occurs within the sedimentary column. It is coupled with the degradation of organic matter and the anaerobic oxidation of methane. These processes may be significantly disturbed by sedimentary events, leading to transient state profiles for the involved...Contributeur (s):
-
Gueguen, Bleuenn / Rouxel, Olivier / Rouget, Marie-laure / Bollinger, Claire / Ponzevera, Emmanuel / Germain, Yoan / Fouquet, Yves - 2016Ferromanganese (Fe-Mn) crusts are potential archive of the Ni isotope composition of seawater through time. In this study we aim at (1) understanding Ni isotope fractionation mechanisms and metal enrichment processes in Fe-Mn deposits, (2) addressing global vs. local control of Ni isotope...Contributeur (s):
-
Ruffine, Livio / Germain, Yoan / Polonia, Alina / De Prunele, Alexis / Croguennec, Claire / Donval, Jean-pierre / Pitel-roudaut, Mathilde / Ponzevera, Emmanuel / Caprais, Jean-claude / Brandily, Christophe / Grall, Celine / Bollinger, Claire / Geli, Louis / Gasperini, Luca - 2015Within the Sea of Marmara, the highly active North Anatolian Fault (NAF) is responsible for major earthquakes (Mw>=7), and acts as a pathway for fluid migration from deep sources to the seafloor. This work reports on pore water geochemistry from three sediment cores collected in the Gulfs of...Contributeur (s):
-
Barra, Jean Aubert / Zanda, Brigitte / Jambon, Albert / Bollinger, Claire - 2015International audienceContributeur (s):
-
Freslon, Nicolas / Bayon, Germain / Toucanne, Samuel / Bermell, Sylvain / Bollinger, Claire / Chéron, Sandrine / Etoubleau, Joël / Germain, Y. / Kripounoff, A. / Rouget, Marie-Laure - 2014International audienceContributeur (s):
-
Bayon, Germain / Birot, Dominique / Ruffine, L. / Caprais, J.C. / Ponzevera, Emmanuel / Bollinger, Claire / Donval, J.P. / Charlou, J.-L. / Voisset, M. / Grimaud, S. - 2011International audienceContributeur (s):
-
Lemaitre, Nolwenn / Bayon, Germain / Ondreas, Helene / Caprais, Jean-claude / Freslon, Nicolas / Bollinger, Claire / Rouget, Marie-laure / De Prunele, Alexis / Ruffine, Livio / Olu-le Roy, Karine / Sarthou, Geraldine - 2014Seawater samples were collected by submersible above methane seeps in the Gulf of Guinea (Regab and Baboon pockmarks) in order to investigate the behaviour of iron (Fe), manganese (Mn) and rare earth elements (REE) during fluid seepage. Our aim was to determine whether cold seeps may represent...Contributeur (s):
-
Freslon, Nicolas / Bayon, Germain / Toucanne, Samuel / Bermell, Sylvain / Bollinger, Claire / Cheron, Sandrine / Etoubleau, Joel / Germain, Yoan / Khripounoff, Alexis / Ponzevera, Emmanuel / Rouget, Marie Laure - 2014We report rare earth element (REE) and neodymium (Nd) isotope data for the organic fraction of sediments collected from various depositional environments, i.e. rivers (n=25), estuaries (n=18), open-ocean settings (n=15), and cold seeps (n=12). Sedimentary Organic Matter (SOM) was extracted using a...Contributeur (s):
-
Callac, Nolwenn / Rommevaux-jestin, Celine / Rouxel, Olivier / Lesongeur, Francoise / Liorzou, Celine / Bollinger, Claire / Ferrant, Anthony / Godfroy, Anne - 2013Oceanic basalts host diverse microbial communities with various metabolisms involved in C, N, S, and Fe biogeochemical cycles which may contribute to mineral and glass alteration processes at, and below the seafloor. In order to study the microbial colonization on basaltic glasses and their...Contributeur (s):
-
This paper reports on a novel procedure for determining trace element abundances (REE and Y, Cr, Mn, Co) in seawater by inductively coupled plasma sector field mass spectrometry (ICP-SFMS). The procedure uses a combination of pre-concentration using co-precipitation onto magnesium hydroxides and...Contributeur (s):
-
Bayon, Germain / Birot, Dominique / Bollinger, Claire / Barrat, Jean Alix - 2011We report on an improved method for determining trace element abundances in seawater and other natural waters. The analytical procedure involves co-precipitation on iron hydroxides after addition of a Tm spike, and measurement by inductively coupled plasma-sector field mass spectrometry (ICP-SFMS...Contributeur (s):
-
Bayon, Germain / Barrat, Jean Alix / Etoubleau, Joel / Benoit, Mathieu / Bollinger, Claire / Revillon, Sidonie - 2009We present a revised method for the determination of concentrations of rare earth (REE) and other trace elements (Y, Sc, Zr, Ba, Hf, Th) in geological samples. Our analytical procedure involves sample digestion using alkaline fusion (NaOH-Na2O2) after addition of a Tm spike, co-precipitation on...Contributeur (s):