%0 Conference Proceedings
%T Controls of Ca/Mg/Fe activity ratios in pore water chemistry models of the Callovian--Oxfordian Clay Formation
%+ Bureau de Recherches Géologiques et Minières (BRGM)
%+ Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA)
%A Lerouge, Catherine
%A Vinsot, Agnès
%A Grangeon, Sylvain
%A Wille, Guillaume
%A Fléhoc, Christine
%A Gailhanou, Hélène
%A Gaucher, Eric C.
%A Made, Benoît
%A Altmann, Scott
%A Tournassat, Christophe
%< avec comité de lecture
%( Proceedings of the Fourteenth International Symposium on Water-Rock Interaction, WRI
%B Fourteenth International Symposium on Water-Rock Interaction, WRI 14
%C Avignon, France
%I Elsevier
%3 Procedia Earth and Planetary Science
%P 475-478
%8 2013-06-09
%D 2013
%R 10.1016/j.proeps.2013.03.133
%Z Sciences of the Universe [physics]/Earth Sciences/Applied geology
%Z Environmental SciencesConference papers
%X The pore water chemistry model of the Callovian-Oxfordian clay formation considers that the divalent Ca, Mg and Fe cations are controlled by equilibrium reactions with pure carbonates: calcite for Ca, dolomite for Mg and siderite for Fe. Results of a petrological study and the Ca/Mg and Ca/Fe activity ratios computed based on natural pore water chemistry provide evidence that equilibrium with pure calcite and pure dolomite is a reasonable assumption for undisturbed pore waters; on the other hand siderite cannot be considered at equilibrium with pore waters at the formation scale.
%G English
%L hal-00781650
%U https://brgm.hal.science/hal-00781650
%~ SDE
%~ BRGM
%~ ANDRA
%~ GIP-BE
%~ BRGM-DO