Diffusion as the main process for mass transport in very low water content argillites: 2. Fluid flow and mass transport modeling

On the basis of chloride concentrations of pore water in the Tournemire massif (part 1), a conceptual model for mass transport in argillites by diffusion is proposed. From this conceptual model and current knowledge of the geological history of the massif, one‐dimensional numerical simulations are f...

Full description

Saved in:
Bibliographic Details
Published in:Water resources research 2004-01, Vol.40 (1), p.n/a
Main Authors: Patriarche, Delphine, Ledoux, Emmanuel, Michelot, Jean-Luc, Simon-Coinçon, Régine, Savoye, Sébastien
Format: Article
Language:English
Subjects:
chloride
deuterium
diffusion coefficients
Earth Sciences
France
interstitial water
porosity
Sciences of the Universe
transport modeling
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:On the basis of chloride concentrations of pore water in the Tournemire massif (part 1), a conceptual model for mass transport in argillites by diffusion is proposed. From this conceptual model and current knowledge of the geological history of the massif, one‐dimensional numerical simulations are formulated for chloride transport in Tournemire massif over the past 53 Ma. Good agreement between experimental data and calculated values for both diffusion coefficients and concentrations of chloride confirms that diffusion is the main process for mass transport in the massif. This model is also tested using deuterium contents of pore water, applying variable concentrations to meteoric water (circulating in system boundary layers) based on the thermal dependency of its isotopic composition. These simulations reveal the likely important role of lithologic heterogeneities, such as fractures, in the horizontal distribution of tracer concentrations.
ISSN:0043-1397
1944-7973
DOI:10.1029/2003WR002700