CGRG Bibliography of Canadian Geomorphology
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Author : Evans, R.D.
Date : 1981
Title : Measurements of sediment accumulation and phosphorus retention using lead-210 dating
Publication : Unpublished Ph.D. dissertation. McGill University, Montreal
Issue :
Page(s) :
Abstract
Lead-210 dating was used to measure rates of sediment accumulation in three lakes in the Haliburton area of Ontario. Approximately twenty cores were analyzed in each lake. The rates of accumulation were correlated with lake depth at the sample site. This relationship was used to calculate accumulation of sediment over the whole lake area. The retention of phosphorus (P) in the sediments of each lake was calculated using the whole lake sediment accumulation, and mean P concentrations in the sediments. This P retention compared favourably with that previously measured by mass balance methods. Total anthropogenic lead was measured in each lake. In a proposed method for simplifying the measurement of the average accumulation of the bulk sediments, the amount of anthropogenic lead in a core was used as an indicator of sediment movement. Predictions of average accumulation based on a single dated sediment core compared well with whole lake measurements.
Bibliography of Canadian Geomorphology