scholarly journals Pore-water evolution and solute-transport mechanisms in Opalinus Clay at Mont Terri and Mont Russelin (Canton Jura, Switzerland)

2017 ◽  
pp. 131-151
Author(s):  
Martin Mazurek ◽  
Antoine de Haller
Keyword(s):  
Solute Transport ◽  
Pore Water ◽  
Opalinus Clay ◽  
Transport Mechanisms ◽  
Mont Terri

Solute transport in formations of very low permeability: profiles of stable isotope and dissolved noble gas contents of pore water in the Opalinus Clay, Mont Terri, Switzerland

2002 ◽  
Vol 66 (8) ◽  
pp. 1311-1321 ◽  
Author(s):  
André P. Rübel ◽  
Christian Sonntag ◽  
Johanna Lippmann ◽  
F.J. Pearson ◽  
Andreas Gautschi
Keyword(s):  
Stable Isotope ◽  
Solute Transport ◽  
Pore Water ◽  
Noble Gas ◽  
Opalinus Clay ◽  
Low Permeability ◽  
Mont Terri

CO2 data on gas and pore water sampled in situ in the Opalinus Clay at the Mont Terri rock laboratory

2008 ◽  
Vol 33 ◽  
pp. S54-S60 ◽  
Author(s):  
A. Vinsot ◽  
C.A.J. Appelo ◽  
C. Cailteau ◽  
S. Wechner ◽  
J. Pironon ◽  
...  
Keyword(s):  
Pore Water ◽  
Opalinus Clay ◽  
Rock Laboratory ◽  
Mont Terri ◽  
Mont Terri Rock Laboratory

scholarly journals Potential Uranium Migration within the Geochemical Gradient of the Opalinus Clay System at the Mont Terri

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1087
Author(s):  
Theresa Hennig ◽  
Michael Kühn
Keyword(s):  
Pore Water ◽  
Host Rock ◽  
Multicomponent Diffusion ◽  
Opalinus Clay ◽  
Potential Host ◽  
In Situ Experiments ◽  
Homogeneous Models ◽  
Uranium Migration ◽  
Clay System ◽  
Mont Terri

Transport properties of potential host rocks for nuclear waste disposal are typically determined in laboratory or in-situ experiments under geochemically controlled and constant conditions. Such a homogeneous assumption is no longer applicable on the host rock scale as can be seen from the pore water profiles of the potential host rock Opalinus Clay at Mont Terri (Switzerland). The embedding aquifers are the hydro-geological boundaries, that established gradients in the 210 m thick low permeable section through diffusive exchange over millions of years. Present-day pore water profiles were confirmed by a data-driven as well as by a conceptual scenario. Based on the modelled profiles, the influence of the geochemical gradient on uranium migration was quantified by comparing the distances after one million years with results of common homogeneous models. Considering the heterogeneous system, uranium migrated up to 24 m farther through the formation depending on the source term position within the gradient and on the partial pressure of carbon dioxide pCO2 of the system. Migration lengths were almost equal for single- and multicomponent diffusion. Differences can predominantly be attributed to changes in the sorption capacity, whereby pCO2 governs how strong uranium migration is affected by the geochemical gradient. Thus, the governing parameters for uranium migration in the Opalinus Clay can be ordered in descending priority: pCO2, geochemical gradients, mineralogical heterogeneity.

Measurement of thermally-induced pore-water pressure increase and gas migration in the Opalinus Clay at Mont Terri

2007 ◽  
Vol 32 (8-14) ◽  
pp. 937-946 ◽  
Author(s):  
Herbert Kull ◽  
Norbert Jockwer ◽  
Chun-Liang Zhang ◽  
Yannick Wileveau ◽  
Stéphane Pepa
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Pressure Increase ◽  
Opalinus Clay ◽  
Gas Migration ◽  
Thermally Induced ◽  
Mont Terri
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