GIS-based 3D sedimentary model for visualizing complex glacial deposition in Kersilö, Finnish Lapland

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http://hdl.handle.net/10138/257516

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Åberg , A K , Salonen , V-P , Korkka-Niemi , K , Rautio , A , Koivisto , E & Åberg , S C 2017 , ' GIS-based 3D sedimentary model for visualizing complex glacial deposition in Kersilö, Finnish Lapland ' , Boreal Environment Research , vol. 22 , pp. 277-298 .

Title: GIS-based 3D sedimentary model for visualizing complex glacial deposition in Kersilö, Finnish Lapland
Author: Åberg, Annika K.; Salonen, Veli-Pekka; Korkka-Niemi, Kirsti; Rautio, Anne; Koivisto, Emilia; Åberg, Susanne C.
Contributor: University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Department of Geosciences and Geography
University of Helsinki, Department of Geosciences and Geography
Date: 2017
Language: eng
Belongs to series: Boreal Environment Research
ISSN: 1239-6095
URI: http://hdl.handle.net/10138/257516
Abstract: Complicated Quaternary sediment strata have been preserved within the ice-divide zone of northern Finland because of weak glacial erosion. Geographic Information System (GIS) databases, 3D modelling and ground penetrating radar surveys were used to construct the 3D structure of unconsolidated sediments and bedrock topography for Kersilo, Sodankyla, to provide information for freshwater management and environmental studies in the mineral exploration area. The model was created using a combination of explicit and implicit modelling covering an area of 10.5 km(2). The surficial deposits in the study area are a few metres thicker than their average thickness in northern Finland. They include three till units and four sandy or gravelly units. Fluvial action has repeatedly deposited sorted sediments in the channel valley of the Kitinen river. Basins in the bedrock have preserved thick sediment packages (> 15 m), indicating that the bedrock topography controls the sedimentary features. Aquifers in the area are small and disconnected, and perched aquifers exist due to the low hydraulic conductivity of interlayered tills.
Subject: FENNOSCANDIA
FINLAND
1171 Geosciences
1172 Environmental sciences
114 Physical sciences
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