Glacial lake

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Glacial lake is a lake with origins in a melted glacier.
Glacial lake is a lake with origins in a melted glacier.

Glacial lake is a lake with origins in a melted glacier. Near the end of the last ice age, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often leaves behind large deposits of ice in hollows between drumlins or hills. As the ice age ends, these will melt to create lakes.

The scouring action of the glaciers pulverizes minerals in the rock over which the glacier passes.

These pulverized minerals become sediment at the bottom of the lake, and some of the rock flour becomes suspended in the water column.

These suspended minerals support a large population of algae, making the water appear green.


[edit] Also see

[edit] Reference

  1. Wikipedia Glacial lake [1]

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