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A 'glacial lake' is a lake with origins in a melted glacier.
Glacial lakes can be green in color, the result of ground up minerals (rock flour) supporting a large population of algae.
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A retreating glacier often leaves sections of ice behind, in hollows between drumlins or hills. As the ice age ends these will melt to create lakes. These lakes are often found surrounded by drumlins, along with other evidence of the glacier, such as moraines, eskers and erosional features such striations and chatter marks.

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See also

References

See also

★ Great Lakes

★ Glacial history of Minnesota

★ Proglacial lake

★ Moraine-dammed lake

References

1. Nova, Mystery of the Mega flood, [1], PBS