Transport and fate of mine tailings in a coastal fjord of British Columbia as inferred from the sediment record

The impact of urban expansion and agricultural legacies on trace metal accumulation in fluvial and lacustrine sediments of the lower Chesapeake Bay basin, USA

“…4B) possessed comparable sedimentation rates; with accumulations ranging from 0.63 cm yr −1 to 0.6 cm yr −1 , respectively, and thus display construction enrichments of similar magnitude (44.8-64.39% greater than mean core enrichments). Though trace metals concentrations in aquatic sediments can also be related to sediment distribution and accumulation rates (Odhiambo et al, 1996;Clark et al, 2014), the lack of correlations between metal concentrations and sedimentation rates in these lakes core profiles (Table 2) suggests the prominent role of anthropogenic point sources over intrinsic sediment redistribution or variation in accumulation rates in these systems. The results support the presence of contaminated soils in headwater reaches and reaffirm the probable role of legacy sediments in contemporary estuarine environments.…”

“…Point sources for metal pollution include municipal sewage discharges, power plant effluence, industrial releases, and acid mine drainage (Alloway, 2013;Andren et al, 1975). The disposal of mine tailings in proximity to aquatic systems correlates with environmental degradation (Odhiambo et al, 1996), eventually exacerbating the biological uptake of metals associated with mine waste (Axtmann and Luoma, 1991). Decaying automobile parts and concrete contributes significantly to trace metal concentration as water flows through landscapes (Rice, 1999;Wang and Bjorn, 2014;Karuppiah and Gupta, 1998;Yesilonis et al, 2008).…”

Submarine Tailings Disposal (STD)—A Review

“…Between 1983 and 1989, the after-closure monitoring program detected that the tailings pore water was enriched in Mo, possibly liberating this element into the marine environment. Additionally, a biological impact on the benthic community of the fjord was observed in the deposition zone [101][102][103].…”

Spatial and isotopic analysis of watershed soil loss and reservoir sediment accumulation rates in Lake Anna, Virginia, USA

“…A regression model based on Matsumoto and Wong (1977) and Odhiambo et al (1996) was used to interpret sediment accumulation rates. The model assumes the following: 210 Pb flux to the sediments is constant over the time interval considered; there is no or negligible migration of 210 Pb after deposition in the sediment column; the sediment accumulation rate is constant with time.…”

“…These conduits rarely appear in aerial photographs or LULC datasets and can be significant sources of eroded materials (Ricker et al 2008). Reservoir sediment accumulation analysis was based on well-established isotopic sediment core methods utilizing 210 Pb and 137 Cs (Matsumoto and Wong 1977;Foster and Walling 1994;Odhiambo et al 1996;Benoit et al 1999;Zajaczkowski et al 2004;Bellucci et al 2005;Ssemmanda et al 2005). Although watershed erosion and sediment accumulation analyses are proven approaches, validation through fluvial suspended sediment measurements and reservoir geophysical surveys are necessary to calculate a complete reservoir sediment budget.…”