Environmental study of valley fill sediments |
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| Authors: | S Jaskó |
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| Institution: | (1) Pethényi köz 4, H-1122 Budapest XII, Hungary |
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| Abstract: | The study of Pleistocene and Holocene fluviatile deposits in river valleys is important for environmental protection. Well records allow the mapping of clay, sand, and gravel beds under recent valley floors. Such surveys can also locate active tectonic zones. This technique helps in assessing potential seismic hazards for large industrial sites.The study of fluviatile sediments under recent valley floors is relevant to environmental studies for another reason as well. The permeability characteristics of these formations have a decisive bearing on the spreading of various pollutants entering the rivers or the groundwater along the rivers. Thus, the knowledge of subsurface formations is essential for the siting of factories with dangerous products and deposits of hazardous waste.Fluviatile sediments along the Hungarian stretch of the Danube Valley have been explored by thousands of shallow boreholes. These allowed the geotectonical and hydrogeological study of sites for completed and planned dams and nuclear power stations and assessing potential environmental hazards. |
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