Reference : Relationship between sedimentary features and permeability at different scales in the...
Scientific journals : Article
Engineering, computing & technology : Geological, petroleum & mining engineering
http://hdl.handle.net/2268/116580
Relationship between sedimentary features and permeability at different scales in the Brussels Sands
English
Possemiers, Mathias [Katholieke Universiteit Leuven - KUL > Department of Earth and Environmental Sciences > Applied Geology and Mineralogy > >]
Huysmans, Marijke [Katholieke Universiteit Leuven - KUL > Department of Earth and Environmental Sciences > Applied Geology and Mineralogy > >]
Peeters, Luk [CSIRO > Land and Water, Waite Campus, Waite Road Urrbrae, Australia. > > >]
Batelaan, Okke [Vrije Universiteit Brussel - VUB > Department of Hydrology and Hydraulic Engineering > > >]
Dassargues, Alain mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
Mar-2012
Geologica Belgica
Geologica Belgica
15
3
156-164
Yes (verified by ORBi)
International
1374-8505
Bruxelles
Belgium
[en] Geological heterogeneity ; Sedimentary structures ; Hydrogeology ; Hydraulic conductivity ; Air permeability ; Geostatistics
[en] The Brussels Sands display a complex three-dimensional subsurface architecture. This sedimentological heterogeneity induces a highly heterogeneous spatial distribution of hydrogeological parameters at different scales and may consequently influence subsurface fluid flow and solute migration. This study aims at characterizing spatial variability of permeability at different scales in the Brussels Sands. Firstly, a literature review on the permeability distribution of the Brussels Sands was performed. Secondly, a field campaign was carried out consisting of field observations of the small-scale sedimentary structures and in situ measurements of air permeability. A total of 6550 cm-scale air permeability measurements were carried out in situ in three Brussels Sands quarries in the central part of Belgium: Bierbeek, Mont Saint Guibert and Chaumont Gistoux. On the large basin scale, substantial differences in permeability are observed. A literature data analysis shows that there is no clear correlation between hydraulic conductivity and sedimentary facies. At the small scale, results show that permeability heterogeneity and anisotropy are strongly influenced by sedimentary heterogeneity in all three quarries. Clay-rich sedimentary features such as bottomsets and distinct mud drapes exhibit a different statistical and geostatistical permeability distribution compared to the cross-bedded lithofacies, where the permeability anisotropy is dominated by the foreset lamination orientation.
Aquapôle - AQUAPOLE
Researchers ; Professionals
http://hdl.handle.net/2268/116580
http://popups.ulg.ac.be/Geol/docannexe.php?id=3638

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