Reference : Small-scale sedimentary structures and permeability in a cross-bedded aquifer
Scientific journals : Article
Engineering, computing & technology : Geological, petroleum & mining engineering
http://hdl.handle.net/2268/3779
Small-scale sedimentary structures and permeability in a cross-bedded aquifer
English
Huysmans, Marijke [Katholieke Universiteit Leuven - KUL > Department of Earth and Environmental Sciences > Applied Geology and Mineralogy > >]
Peeters, Luk [Katholieke Universiteit Leuven - KUL > Department of Earth and Environmental Sciences > Applied Geology and Mineralogy > >]
Moermans, Gert [Katholieke Universiteit Leuven - KUL > Department of Earth and Environmental Sciences > Applied Geology and Mineralogy > >]
Dassargues, Alain mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
2008
Journal of Hydrology
Elsevier Science
361
41-51
Yes (verified by ORBi)
International
0022-1694
[en] Geological heterogeneity ; hydrogeology ; Sedimentary structures ; Air permeability ; Geostatistics ; Brusselian Sands (Belgium)
[en] The objective of this study is to investigate the relation between small-scale sedimentary structures and permeability in the Brussels Sands formation, an early Middle-Eocene shallow marine sand deposit in Central Belgium that constitutes a major groundwater source in the region. A field campaign was carried out consisting of field observations of the sedimentary structures and in situ measurements of air permeability. The sedimentary structures were interpreted, sketched, digitally photographed and measured in a representative outcrop. Additionally, a total of 2750 cm-scale air permeability measurements were carried out in situ. Analysis of the spatial distribution of sedimentary structures and permeability shows that clay-rich sedimentary features such as bottomsets and distinct mud drapes exhibit a different statistical and geostatistical permeability distribution compared to the other lithofacies in the cross-bedded sands. Spatial analysis of the air permeability data shows that permeability anisotropy in the cross-bedded lithofacies is dominated by the foreset lamination orientation. These results show that smallscale sedimentary heterogeneity strongly influences the local spatial distribution of the hydraulic properties and results in permeability heterogeneity and stratification that would produce anisotropy in upscaled permeability values.
Researchers ; Professionals
http://hdl.handle.net/2268/3779
10.1016/j.jhydrol.2008.07.047
http://dx.doi.org/10.1016/j.jhydrol.2008.07.047
The original publication is available at http://dx.doi.org/10.1016/j.jhydrol.2008.07.047

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