Glacial lake

Glacial lake

A glacial lake is a lake with origins in a melted glacier.

Glacial lakes can be green as a result of pulverized minerals (rock flour) that support a large population of algae. [Nova, Mystery of the Mega flood, [] , PBS]

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. These lakes are often surrounded by drumlins, along with other evidence of the glacier such as moraines, eskers and erosional features such as striations and chatter marks.

ee also

*Great Lakes
*Glacial history of Minnesota
*Proglacial lake
*Moraine-dammed lake


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  • glacial lake —     a) A lake that derives much or all of its water from the melting of glacier ice, fed by meltwater, and lying outside the glacier margins (e.g., proglacial lake) or lying on a glacier (e.g., ice walled lake, ice floored lake) and due to… …   Glossary of landform and geologic terms

  • Glacial Lake Bassano — was formed in the Late Pleistocene during the deglaciation of south central Alberta by the impoundment of the re established proglacial drainage system and addition of glacial meltwater. It is associated with the development of through flowing… …   Wikipedia

  • Glacial Lake Tonawanda — was a prehistoric lake that existed approximately 10,000 years ago at the end of the last ice age, in Western New York, United States.Ernest H. Muller (1977), [http://www.blackwell… …   Wikipedia

  • Glacial Lake Minong — was a proglacial lake that formed in the Lake Superior basin during the Wisconsin glaciation around 10,000 B.P. (Before Present). This was the last glacial advance that entered Michigan and only covered part of the upper peninsula. Lake Minong… …   Wikipedia

  • Glacial Lake Passaic — was a prehistoric proglacial lake that existed in northern New Jersey in the United States at the end of the last ice age approximately 13,000 years ago, which was formed of waters released by the melting of the retreating Wisconsin Glacier that… …   Wikipedia

  • Glacial Lake Ojibway — was a prehistoric lake in what is now Northern Ontario. Ojibway was the last of the great proglacial lakes of the last ice age. Comparable in size to Lake Agassiz (to which it was probably linked), and north of the Great Lakes, it was at its… …   Wikipedia

  • Glacial Lake Duluth — was a proglacial lake that formed in the Lake Superior drainage basin as the Laurentian Glacier retreated. The oldest existing shorelines were formed after retreat from the Greatlakean advance, sometime around 11,000 years B.P. Lake Duluth formed …   Wikipedia

  • Glacial Lake Iroquois — was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago. The lake was essentially an enlargement of the present Lake Ontario that formed because the St. Lawrence River downstream from the lake… …   Wikipedia

  • Glacial Lake Wisconsin — was a prehistoric proglacial lake that existed from approximately 19,000 to 15,000 years ago, at the end of the last ice age, in the central part of present day Wisconsin in the United States.Glacial Lake Wisconsin was formed by meltwater flowing …   Wikipedia

  • Glacial Lake Tight — Lake Tight, named for geologist William G. Tight, was a glacial lake located in what is present day Ohio, Kentucky, and West Virginia, during the Ice Age.HistoryLake Tight s origins date to nearly 2 million years before the modern era. As the Ice …   Wikipedia

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