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| Titel:
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Characterization of sand lenses and their role for subsurface transport in low-permeability clay tills |
| Type:
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Article in proceedingsArticle in proceedings |
| Person(er):
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Technical University of Denmark
Forfatter:
Klint, K. E.
Geological Survey of Denmark, Denmark
Forfatter:
Nilsson, B.
Geological Survey of Denmark, Denmark
Technical University of Denmark
Email:
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| Uddrag:
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Glacial sediments dominate large parts of the geological topology in Denmark. They predominantly consist of lowpermeability
tills, but fractures and sand-lenses constitute zones of enhanced permeability facilitating preferential flow.
This study focuses on characterization of sand deposits with regard to appearance and hydraulic properties. The
investigated sand lenses appear as thin sheets, elliptic lenses or small pockets. Most common are elongated shapes
with large vertical and horizontal anisotropy deriving from the ice movement direction during deposition. It proved
important to include the sand lenses in hydro-geological models to successfully characterize subsurface flow and
transport, e.g. for remediation activities. |
| Publiceret:
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part of: Proceedings of GeoHydro 2011, 2011, |
| Præsenteret ved:
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GeoHydro 2011, Quebec, Canada |
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