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Facts & Profile
Kettles
Stock Photos
A kettle (also known as a kettle lake, kettle pond, kettle hole, or pothole) is a depression or hole in an outwash plain formed by retreating glaciers or draining floodwaters. The kettles are formed as a result of blocks of dead ice left behind by retreating glaciers, which become surrounded by sediment deposited by meltwater streams as there is increased friction.
The ice becomes buried in the sediment and when the ice melts, a depression is left called a kettle hole, creating a dimpled appearance on the outwash plain. Lakes often fill these kettles; these are called kettle hole lakes. Another source is the sudden drainage of an ice-dammed lake. When the block melts, the hole it leaves behind is a kettle. As the ice melts, ramparts can form around the edge of the kettle hole. The lakes that fill these holes are seldom more than 10 m (33 ft) deep and eventually fill with sediment. In acid conditions, a kettle bog may form but in alkaline conditions, it will be kettle peatland.
Important Note:
This text is based on the article
Kettle (landform)
from the free encyclopedia
Wikipedia
and is licensed under the
Creative Commons CC-BY-SA 3.0 Unported
(
short version
). A list of the
authors
is available on Wikipedia.