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(Sonar profiling of Quebec lake sediments in regards to acid
precipitation.).
Shilts, WW
EAU QUE. Vol. 15, no. 4, pp. 369-375. 1982.
Sonar profiling of Quebec lakes, provides graphic cross sections
of the soft glacial and nonglacial sediments that lie beneath lake
bottoms. In most lakes 1-5 m of watery organic gyttja,
representing modern lake sediment, overlies unconsolidated glacial
sediments ranging from a few metres of till to 10's of metres of
laminated proglacial clayey silt or sand. In the bedrock
depressions that hold lakes, the ratio of sediment volume to water
volume (S/W) ranges from 6:1 to 1:10 in the lakes studied. It is
thought that the greater its S/W ratio, the greater a lake's
capacity to react with and possibly buffer acidified groundwater
or surface water.
 Descriptors: Article Subject Terms acid rain | lakes | sediment chemistry | sediments | seismic profiles | Article Geographic Terms Canada, Quebec
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