Logo UCBL

Observatoire des Sciences de l'Univers
  • Directrice :
    Isabelle Daniel
  • Secrétaire :
    Oriane Marduel
Se connecter

 
Vous êtes ici : Accueil / Séminaires / Séminaires passés / 2014-2015 / 13/10 Séminaires Européens: Tom McCollom (University of Colorado)

13/10 Séminaires Européens: Tom McCollom (University of Colorado)

(à amphi L, ENS, du 13/10/2014 14:00 au 13/10/2014 15:00)
Quand ? Le 13/10/2014,
de 14:00 à 15:00
S'adresser à
Téléphone +33 4 72 72 88 24
Ajouter un événement au calendrier vCal
iCal

Adventures in the Land of the Serpentine

The serpentinization of ultramafic rocks has received increasing attention from scientists in recent years, in large part because the process generates molecular hydrogen (H2) and methane (CH4) that can support chemosynthetic microbial communities in surface and subsurface environments. Because production of hydrogen is linked to oxidation of iron, the distribution of iron among the product minerals is a key component in determining how much hydrogen is produced, but the factors that control how the iron is distributed among the product phases remains poorly understood. Although the serpentinization reaction principally involves only two reactant phases (olivine and orthpyroxene) and three product phases (serpentine, brucite, and magnetite), the process is actually highly variable and quite complex. I will present results of a series of laboratory experiments that focus on understanding the factors that control the distribution of iron and amount of hydrogen generated during serpentinization.

host:

Isabelle Daniel & Muriel Andreani

Actions sur le document

LogoENS.gif

Département ENS
  • Directeur :
    Stéphane Labrosse
  • Secrétaire :
    Emmanuelle Lousson
« Novembre 2018 »
Novembre
LuMaMeJeVeSaDi
1234
567891011
12131415161718
19202122232425
2627282930
 

Outils personnels