When filled with water they are called kettle lakes. Why are they called kettle ponds? The kettle ponds were formed more than 15, years ago, when blocks of glacier ice melted, leaving massive holes, called kettles, that filled with fresh water. Why are kettle lakes important? If the area was wet enough to have a high water table, the depressions filled with water to form kettle lakes. They accumulate water from precipitation, overland runoff, and groundwater, and they lose water to evaporation and seepage to groundwater.
Are kettle ponds spring fed? It is fed by surface runoff and underwater springs but there is no permanent inflow streams. If the water in a kettle becomes acidic due to decomposing organic plant matter, it becomes a kettle bog. What are the two main types of glaciers?
There are two primary types of glaciers: Continental: Ice sheets are dome-shaped glaciers that flow away from a central region and are largely unaffected by underlying topography e.
What evidence is there of past glaciers? Such erratics provide evidence of glacial flow lines. Examples include omars, jasper conglomerates, and tillites. Other evidence for glaciation is recorded on some bedrock surfaces beneath the glacial drift. Many of our small, deep lakes in Michigan are kettle lakes.
Kettle lakes are irregularly shaped in the manner of the original ice blocks that produced them2. Erratics are formed by glacial ice erosion resulting from the movement of ice.
Glaciers crack pieces of bedrock off in the process of plucking, producing the larger erratics. 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. Kettles form when a block of stagnant ice a serac detaches from the glacier. Eventually, it becomes wholly or partially buried in sediment and slowly melts, leaving behind a pit. In many cases, water begins fills the depression and forms a pond or lake—a kettle.
What do glacial erratics tell us about past ice sheets? The first thing erratics can tell us about past ice sheets is the direction of ice movement. If you find an erratic with a distinctive lithology, you can trace it back to the location where the distinctive bedrock is found.
What is an esker? Frogs, toads and fish all live in and around kettle lakes. Ontario, the Great Lakes, and almost all of Canada was covered in ice 18, years ago Glaciers and glacial ice sheets grew and spread as snow accumulated and formed ice.
The future Great Lakes began to form As the climate warmed, the southern edge of the ice sheet began to melt.
Between 9, and 8, years ago, the edge of the receding ice sheet reached the region around Kettle Lakes. Meltwaters from the receding glacier sometimes spanned the width of Ontario After being buried, the ice chunks were covered in sediment from the glacial streams.
Formation of kettles Since these huge chunks of ice were buried, they melted slowly, hidden from the sun and insulated from warmer temperatures that were melting the ice sheet itself. Favourable for flora and fauna Some kettles are above the water table and are dry, or only have water in the spring.
The road actually goes around it. It's still there, but now it's filled with trees and a lot more difficult to see. Below are some examples of kettle lakes in Michigan. The "giveaway" for many of these, as to their ice block origins, lies in their crenulated outline and their undulating bathymetry.
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