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A glacial lake is a lake
Lake

A lake is a terrain feature , a body of liquid on the surface of a world that is localized to the bottom of basin and moves slowly if it moves at all....
 with origins in a melted glacier
Glacier

A glacier is a large, slow-moving mass of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity and high pressure....
.

Glacial lakes can be green as a result of pulverized minerals (rock flour
Rock flour

Rock flour, or glacial flour, consists of particle size particles of rock, generated by Glacier#Glacial erosion or by artificial grinding to a similar size....
) that support a large population of algae.

A retreating glacier often leaves behind large deposits of ice in hollows between drumlins or hills.






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Jokulsarlon Lake, Iceland
A glacial lake is a lake
Lake

A lake is a terrain feature , a body of liquid on the surface of a world that is localized to the bottom of basin and moves slowly if it moves at all....
 with origins in a melted glacier
Glacier

A glacier is a large, slow-moving mass of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity and high pressure....
.

Glacial lakes can be green as a result of pulverized minerals (rock flour
Rock flour

Rock flour, or glacial flour, consists of particle size particles of rock, generated by Glacier#Glacial erosion or by artificial grinding to a similar size....
) that support a large population of algae.

A retreating glacier often leaves behind large deposits of ice in hollows between drumlins or hills. As the ice age
Ice age

The general term "ice age" or, more precisely, "glacial age" denotes a geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in an expansion of continental ice sheets, polar ice sheets and alpine glaciers....
 ends, these will melt to create lakes. These lakes are often surrounded by drumlins, along with other evidence of the glacier such as moraines, esker
Esker

An esker is a long, winding ridge of stratified sand and gravel, examples of which occur in glacier and formerly glaciated regions of Europe and North America....
s and erosion
Erosion

For morphological image processing operations, see Erosion 'For use of in dermatopathology, see Erosion Erosion is the removal of solids in the natural environment....
al features such as striations
Glacial striations

Glacial striations or glacial grooves are scratches or gouges cut into bedrock by process of glacial Abrasion . Glacial striations usually occur as multiple straight, parallel grooves representing the movement of the sediment-loaded base of the glacier....
 and chatter mark
Chatter mark

A Chatter mark is one or, more commonly, a series of marks made by vibratory chipping of a bedrock surface by rock fragments carried in the base of a glacier....
s.

See also


  • Great Lakes
    Great Lakes

    The St. Lawrence River Great Lakes are a chain of fresh water lakes located in eastern North America, on the Canada ? United States border. Consisting of Lakes Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario, they form the largest group of freshwater lakes on Earth....
  • Glacial history of Minnesota
    Glacial history of Minnesota

    The glacial history of Minnesota is most defined since the onset of the last glacial period, which ended some 10,000 years ago. Within the last million years, most of the Midwestern United States and much of Canada were covered at one time or another with an ice sheet....
  • Proglacial lake
    Proglacial lake

    In geology, a proglacial lake is a lake formed either by the damming action of a moraine or ice dam during the retreat of a melting glacier, or one formed by meltwater trapped against an ice sheet due to isostatic depression of the crust around the ice....
  • Moraine-dammed lake