Chemisty of lake water and groundwater in areas of contrasting glacial drifts in Eastern Minnesota

✍ Scribed by Richard B. Brugam

• Book ID: 104634065
• Publisher: Springer
• Year: 1981
• Tongue: English
• Weight: 926 KB
• Volume: 80
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00130680

✦ Synopsis

The water chemistry of 28 lakes from both sides of the border between glacial drifts of the Grantsburg lobe (high CaCO 3 ) and Superior lobe (low CaCO3) in east-central Minnesota was examined to determine if drift type influences lake-water chemistry . Similar analyses were performed on groundwater samples taken from wells near each lake . Concentrations of Ca++ Mg++ HC03, SO4 were significantly higher in lakes of the Grantsburg lobe, whereas K+, Si0 2 , and HCO3 were significantly higher in samples of groundwater from the Grantsburg lobe . There was no correlation between groundwater concentrations of particular ions and lake-water concentrations of the same ions, implying that the sources of dissolved ions in lake water are shallow groundwater and soil leachates rather than the deeper groundwater sampled here . Na+ and Clconcentrations in some lakes appear to be strongly influenced by the use of de-icing salt on highways in winter rather than by differences in drift lithology .