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2017
- handle: 10670/1.kisdtq
- hal: hal-01879661
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Polluted sediments Streams Creeks Brooks Runs (Rivers) Man-made lakes Artificial lakes Lakes, Artificial Lakes, Man-made Tanks (Reservoirs) 19th century Engineering, Mining Mines and mining Mining Deposits, Mineral Mineral deposits Mines and mining Mineral resources Mining Mining industry and finance Metal industries Extractive industries Extractive industry Mines and mining Mining industry Mining Metallic elements Toxic metals Construction Ecological science Environmental biology Bionomics Ecological sciences Environment Balance of nature Oecology Biology--Ecology Ecological processesCiter ce document
Alexandre Parker et al., « Contamination records of sediments by heavy metals in a mining-impacted dam », HAL-SHS : géographie, ID : 10670/1.kisdtq
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Résumé
Dams represent favorable contexts for sediments accumulation in large volumes (typical several cm.y-1 up to 200 cm.y-1 for some Asian streams). These sedimentary reservoirs may represent a great environmental issue as they may constitute sinks for Metallic Elements (ME). Dam contexts allow studying the temporal evolution of contaminated sediments transfers (and ME) by different mechanisms (e.g., flood events), notably by resuspension and homogenization processes.• This study has been focussed on a watershed mainly affected by past mining activities (± 6 t of Ag and ± 6000 t of Pb were extracted until the 19th century), where sediments have been accumulated