The sedimentological and Arsenic contamination history of Frame Lake, Yellowknife, Northwest Territories, Canada

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.


Menard, Etienne




Frame Lake, a small (88.4 ha), shallow (< 6.5m), high-latitude lake near Yellowknife was selected to test the feasibility of using sub-bottom profiling to estimate total volumes of heavy metal contaminated sediments in lacustrine environments. Physical and ICP-MS analyses were carried out on freeze cores collected from Frame Lake, sedimentological marker beds and 14C dating was used to chronologically constrain depositional history. ICP-MS results showed high levels of arsenic contamination (~1538 µg g-1) in recent sediments results in distinct seismic reflectors, which contrasts sharply with measured Holocene values of 16 µg g-1 (n=41, ± 5.4 SD). Comparison of core data against sub-bottom profiler transect results permitted an interpolated reconstruction of contaminated sediments throughout the lake. Based on our analysis, a minimum of ~230,000 m3 of contaminated sediments would need to be dredged from Frame Lake to achieve a minimum residual sediment arsenic concentration of < 150 µg g-1.


Environmental Sciences




Carleton University

Thesis Degree Name: 

Master of Science: 

Thesis Degree Level: 


Thesis Degree Discipline: 

Earth Sciences

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).