Sediment geochemistry of streams draining abandoned lead/zinc mines in central Wales: the Afon Twymyn |
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| Authors: | Patrick Byrne Ian Reid Paul J Wood |
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| Institution: | (1) Cascade Consulting Ltd., Enterprise House, Manchester Science Park, Lloyd St. North, Manchester, MI5 6SE, UK;(2) Department of Geography, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK |
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| Abstract: | Purpose Despite the decline of metal mining in the UK during the early 20th century, a substantial legacy of heavy metal contamination
persists in river channel and floodplain sediments. Poor sediment quality is likely to impede the achievement of ‘good’ chemical
and ecological status for surface waters under the European Union Water Framework Directive. This paper examines the environmental
legacy of the Dylife lead/zinc mine in the central Wales mining district. Leachable heavy metal concentrations in the bed
sediments of the Afon Twymyn are established and the geochemical partitioning, potential mobility and bioavailability of sediment-associated
heavy metals are established. |
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