Accéder directement au contenu Accéder directement à la navigation
Communication dans un congrès

Controls of Ca/Mg/Fe activity ratios in pore water chemistry models of the Callovian--Oxfordian Clay Formation

Abstract : 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.
Type de document :
Communication dans un congrès
Liste complète des métadonnées

https://hal-brgm.archives-ouvertes.fr/hal-00781650
Contributeur : Catherine Lerouge <>
Soumis le : lundi 28 janvier 2013 - 10:18:54
Dernière modification le : lundi 15 juin 2020 - 15:52:04

Lien texte intégral

Identifiants

Collections

Citation

Catherine Lerouge, Agnès Vinsot, Sylvain Grangeon, Guillaume Wille, Christine Fléhoc, et al.. Controls of Ca/Mg/Fe activity ratios in pore water chemistry models of the Callovian--Oxfordian Clay Formation. Fourteenth International Symposium on Water-Rock Interaction, WRI 14, Jun 2013, Avignon, France. pp.475-478, ⟨10.1016/j.proeps.2013.03.133⟩. ⟨hal-00781650⟩

Partager

Métriques

Consultations de la notice

328