Mercury as a Global Pollutant pp 1025-1029 | Cite as
Comparison of Mercury Concentrations in Modern Lake Sediments and Glacial Drift in the Canadian Shield in the Region of Ottawa/Kingston to Georgian bay, Ontario, Canada
Abstract
An ongoing problem in evaluating the significance of mercury (Hg) in surficial materials is distinguishing sources of natural (spatial) variation of the geological/geochemical environment from sources (airborne, waterborne, etc.) of anthropogenic (temporal) variation. The Geological Survey of Canada (GSC) has carried out a series of sampling programs, including one in the southeastern part of the geologically complex Canadian Shield, in order to link the easily observable lithological variations of bedrock with the chemical composition of overlying glacial deposits and lake sediments. This research aims to provide a base against which observed variations in life systems can be judged as natural or anthropogenic. In the study area, high concentrations of Hg and other trace elements in lake sediment and glacial sediments can be related to glacial dispersal from mineralized bedrock and/or bedrock with high natural background concentrations of these elements.
Keywords
Lake Sediment Mercury Concentration Glacial Deposit CANADIAN Shield Glacial SedimentPreview
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References
- Baer, A.J., Poole, W.H., and Sanford, B.V.: 1977, G.S.C., Map 1334A.Google Scholar
- Coker, W.B., Hornbrook, E.H.W., and Cameron, E.M.: 1979, G.S.C., Econ. Geol. Rpt. 31, 435–477.Google Scholar
- DiLabio, R.N.W., Rencz, A.N., and Eggington, P.A.: 1982, Can. Jour. Earth Sci. 19, 2297–2305.CrossRefGoogle Scholar
- Friske, P.W.B. and Hornbrook, E.H.W.: 1991, Trans. I.M.M., 100, B47-B56.Google Scholar
- Geological Survey of Canada: 1977a, b, G.S.C., Open Files 405 & 406.Google Scholar
- Hornbrook, E.H.W., Kettles, I.M., and Shilts, W.W.: 1986, Water, Air and Soil Pollut. 31, 969–979.CrossRefGoogle Scholar
- Hornbrook, E.H.W., Lund, N.G. and Lynch, J.J.: 1984a, b, G.S.C., Open Files 899 & 900.Google Scholar
- Jonasson, I.R., Lynch, J.J., and Trip, L.J.: 1973, G.S.C., Paper 73–21, 22 pp.Google Scholar
- Kettles, I.M. and Shilts, W.W.: 1989, G.S.C., Paper 89–20, 97–112.Google Scholar
- Kettles, I.M., Shilts, W.W. and Coker, W.B.: 1991, J. Geochem. Explor. 41, 29–57.CrossRefGoogle Scholar
- Kettles, I.M. and Shilts, W.W.: 1994, G.S.C., Bull. 463, 58 pp.Google Scholar
- Lindqvist, O., Engstrom, D.R., Brigham, M.E., Henning, T.A. and Brezonik, P.L.: 1991, Science 257, 784–787.Google Scholar
- Loukola-Ruskeeniemi, K.: 1990, Geol. Soc. Finland, Bulletin 62(2), p. 167–175.Google Scholar
- Norton, S.A., Dillon, P.J.D., Evans, R.D., Mierle, G. and Kahl, J.S.: 1990: Acidic Precipitation, 3, 73–102.CrossRefGoogle Scholar
- Rasmussen, P.E.: 1993, Ph.D. Thesis, Earth Sciences Depart., Univ. of Waterloo, 379 pp.Google Scholar
- Sangster, A.L.: 1982, Geol. Assoc. Can., Special Paper 25, 91–125.Google Scholar
- Shilts, W.W.: 1984, Groundwater as a Geomorphic Agent, Allen and Unwin, Boston, 135–156.Google Scholar
- Shilts, W.W., Card, K.D., Poole, W.H., and Sandford, B.V.: 1981, G.S.C., Paper 81–14, 7pp. and 3 maps.Google Scholar
- Shilts, W.W. and Coker, W.B.: 1995, Water, Air and Soil Pollut. this volume.Google Scholar
- Sinclair, I.G.L.: 1979, Geochemical Exploration 1978, Assoc. Explor. Geochemists, 487–495.Google Scholar
- Swain, E.B., Engstrom, D.R., Brigham, M.E., Henning, T.A. and Brezonik, P.L.: 1992, Science 257, 784–787PubMedCrossRefGoogle Scholar