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The two processes of advancement and retreat have the power to transform a landscape and leave behind a series of landforms that give great insight into past glacial presence and behavior. Landforms that result from these processes include moraines, kames, kettles, eskers, drumlins, plains, and proglacial lakes.
A drumlin, from the Irish word droimnín ("little ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg [1] [2] formed by glacial ice acting on underlying unconsolidated till or ground moraine. Assemblages of drumlins are referred to as fields or swarms; [3] [4] they ...
[1] [3] Examples include glacial moraines, eskers, and kames. Drumlins and ribbed moraines are also landforms left behind by retreating glaciers. Many depositional landforms result from sediment deposited or reshaped by meltwater and are referred to as fluvioglacial landforms. Fluvioglacial deposits differ from glacial till in that they were ...
Kames are not normally located in proximity to one another, however in Edmonton, Alberta, numerous kames are found nearby, forming the Prosser Archaeological Site. The Fonthill Kame in southern Ontario is in a densely populated area. Examples can also be found in Wisconsin and at the Sims Corner Eskers and Kames National Natural Landscape in ...
Drowned drumlin in Clew Bay, Ireland Till-unsorted (Glacial flour to boulders) deposited by receding/advancing glaciers, forming moraines, and drumlins. Moraines (Terminal) material deposited at the end; (ground) material deposited as glacier melts; (lateral) material deposited along the sides. Drumlins Smooth elongated hills composed of till.
The Withrow Moraine and Jameson Lake Drumlin Field is a National Park Service–designated privately owned National Natural Landmark located in Douglas County, Washington state, United States. [1] Withrow Moraine is the only Ice Age terminal moraine on the Waterville Plateau section of the Columbia Plateau.
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The ridge crests of eskers are not usually level for very long, and are generally knobby. Eskers may be broad-crested or sharp-crested with steep sides. [5] They can reach hundreds of kilometers in length and are generally 20–30 m (66–98 ft) in height. The path of an esker is governed by its water pressure in relation to the overlying ice.