Sedimentological study of the Chernobyl NPP site to schematise radionuclide migration conditions |
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| Authors: | Andrei Matoshko Dmitry Bugai Lionel Dewiere Alexander Skalskyy |
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| Affiliation: | (1) Institute of Geography, National Academy of Sciences of Ukraine, 44 Volodymyrskaya Str., 01034 Kiev, Ukraine;(2) Institute of Geological Sciences, National Academy of Sciences of Ukraine, 55-b Gonchara Str., 01054 Kiev, Ukraine;(3) Institute for Radioprotection and Nuclear Safety, B.P. 17, 92262 Fontenay aux Roses Cedex, France;(4) Institute of Geological Sciences, National Academy of Sciences of Ukraine, 55-b Gonchara Str., 01054 Kiev, Ukraine |
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| Abstract: | The approach, methods and results of a sedimentological study of a near-surface stratum of Late Pleistocene-Holocene deposits in the near-zone (5–10 km radius) of the Chernobyl Nuclear Power Plant are presented. Sedimentological analyses are carried out at three levels of detail: regional-, local- and object-scale. The unsaturated zone and unconfined aquifer at the site are composed of two main genetic types of deposits, aeolian and alluvial, including several dynamic facies. Consideration of lithological properties leads to following ranking of the main genetic sediments facies with respect to radionuclide migration retardation potential: aeolian Based on sedimentological interpretations, the geological environment is schematised into a set of typical geological sections possessing different radionuclide retardation potential. |
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| Keywords: | Geo-environment Groundwater Geology barrier Sorption Strontium-90 Chernobyl accident Alluvium Aeolian deposits |
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