| Title | Distribution, transport, and sources of metals in marine sediments near a coastal lead smelter in northern New Brunswick |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Parsons, M B ;
Cranston, R E |
| Source | Metals in the environment around smelters at Rouyn-Noranda, Quebec, and Belledune, New Brunswick: Results and conclusions of the GSC MITE Point Sources Project; by Bonham-Carter, G (ed.); Geological
Survey of Canada, Bulletin no. 584, 2005, 27 pages; 1 CD-ROM, https://doi.org/10.4095/221178  Open Access |
| Links | Metadata
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| Links | Métadonnées
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| Year | 2005 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | Publication contains 1 map |
| Map Info. | surficial geology, 1:250,000 |
| Media | CD-ROM; digital; on-line |
| Related | This publication is contained in Metals in the environment
around smelters at Rouyn-Noranda, Quebec, and Belledune, New Brunswick:
results and conclusions of the GSC MITE Point Sources Project |
| File format | readme / lisez-moi
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| Province | New Brunswick; Quebec |
| NTS | 21O/09; 21O/16; 21P/09; 21P/10; 21P/11; 21P/12; 21P/13; 21P/14; 21P/15; 21P/16; 22A/01; 22A/02; 22A/03; 22A/04; 22A/05; 22A/06; 22A/07; 22A/08; 22B/01; 22B/08 |
| Area | baie des Chaleurs; Chaleur Bay; northern New Brunswick; Caraquet; Bathurst; Belledune; Dalhousie; Gaspésie |
| Lat/Long WENS | -66.4167 -64.4333 48.5000 47.5833 |
| Subjects | geochemistry; environmental geology; marine geology; smelters; mining activities; metals; pollution; geochemical analyses; environmental studies; environmental impacts; marine sediment geochemistry;
estuaries; concentration; element distribution; source areas; base metal deposits; dispersal patterns; marine environments; arsenic; cadmium; copper; lead; mercury; zinc; nearshore currents; lead isotope ratios; sulphur emissions; oceanography;
hydrologic environment; marine sediment cores; depositional history; chemical processes; pore water samples; spectrometric analyses; organic carbon; iron; nickel; manganese; Brunswick Smelter; Risk assessment; Risk management; Wind |
| Illustrations | bathymetric maps; tables; time series; photomicrographs; rose diagrams; geochemical profiles; sketch maps; plots; Concordia diagrams |
| Program | Metals in the Environment (MITE) |
| Released | 2005 12 22 |
| Abstract | Significant variations in metal concentrations occur in marine sediments collected from Chaleur Bay, an estuary located between northern New Brunswick and Quebec's Gaspésie. The bay receives metals from
many sources including a lead smelter, a mercury-cell chlor-alkali plant, and numerous mined and unmined base-metal deposits. This study examines the dispersal patterns of metals released to the bay from natural and anthropogenic sources, and the
processes that collect and redistribute these elements in the marine environment. Bottom sediments were collected from 124 sites in the bay, at distances up to 100 km away from the smelter. The ranges in metal and metalloid concentrations of 918
sediment subsamples are as follows, in mg/kg: As, 2.8 to 74; Cd, 0.02 to 69; Cu, 3.4 to 200; Hg, <0.01 to 2.4; Pb, 0.3 to 2000; and Zn, 22 to 3200. Dispersion of smelter effluents and atmospheric emissions by wind and/or nearshore currents has
resulted in an area of elevated As, Cd, Cu, Hg, Pb, and Zn concentrations in surficial sediments within approximately 10 to 20 km of the smelter. The concentrations of most metals decrease sharply with increasing distance from the smelter; however,
Pb concentrations exceed background levels in surface sediments throughout the bay. In sediments adjacent to the smelter, metal levels are highest at approximately 5 to 10 cmdepth and decrease toward the sediment surface, which may reflect the
significant reduction in smelter emissions since the mid-1970s. Lead isotope ratios suggest that the surface enrichment of Pb throughout the bay is mainly derived from smelter emissions and historical leaded gasoline combustion. |
| GEOSCAN ID | 221178 |
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