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- W2767794016 abstract "The March 25th, 2015 flood geochemical environmental impact, was studied and analysed to lookinto the impact of the Tailings Impoundments during the event, in the Copiapo basin.SERNAGEOMIN had a geochemical record of sediments, prior to the flood. As the SERNAGEOMINwent to assist the population during the emergency, a new sampling programs was launched, tostudy the same points as the previous study. The quantitative comparison against a base line wastherefore available, an uncommon result in Chile, where baselines do not abound. In addition, thetailings Department had determined the geochemical composition of the tailings basins surface, thedams and the downstream soils of most of the tailings deposits. A methodology was devised todetermine if the contents of a tailings deposit, had significantly contributed materials to downstream,nearby soils or sediments. The study concluded that the flood had actually improved the quality ofthe sediments in several points of the baseline, due to either a washing effect, or to erosion and / orto change of the old soils –soils that were the result of mining contributions during an extensivehistorical period- by materials with a lower content of pollutants, contributed by the alluvium. Inaddition, the geochemical comparison of soils against basins and dams, showed that, contrary to thecommon belief, the tailings deposits of the Copiapo basin did not contribute to the debris in thesediments observed after the flood. The revision of satellite images support these very sameconclusions." @default.
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- W2767794016 date "2017-07-12" @default.
- W2767794016 modified "2023-09-27" @default.
- W2767794016 title "Analysis of the impact of the March 2015 flood on the tailings deposits in the Copiapo valley" @default.
- W2767794016 hasPublicationYear "2017" @default.
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