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Drumlins are typically between 250 and 1,000 m (820 and 3,280 ft) long and between 120 and 300 m (390 and 980 ft) wide. [8] Drumlins generally have a length to width ratio of between 1.7 and 4.1 [8] and it has been suggested that this ratio can indicate the velocity of the glacier. That is, since ice flows in laminar flow, the resistance to ...
Lake Rogen, Sweden as seen from the north. The forested ridges in the lake are 'Rogen moraines' of which this is the type location. A Rogen moraine, also called ribbed moraine, is a subglacially (i.e. under a glacier or ice sheet) formed type of moraine landform, [1] that mainly occurs in Fennoscandia, [1] Scotland, [2] Ireland [3] and Canada.
The Namibian drumlins are a geologic feature in Namibia. Since drumlins only occur as the result of glaciers, researchers determined they are the relic of an ice age in the late Paleozoic Era. [1] The researchers measured the supposed rock drumlins with satellite imagery available on the Internet.
Clew Bay (/ ˈ k l uː /; Irish: Cuan Mó) is a large ocean bay on the Atlantic coast of County Mayo, Ireland.It is roughly rectangular and has more than a hundred small islands on its landward side; Ireland's best example of sunken drumlins.
Drumlins may be composed of stratified or unstratified till ranging in size from sand to boulders. The non-uniformity of drumlin composition is representative of the diverse origin of the sediments. [38] Banding or layering of till may occur in drumlins as till accumulates on the drumlin formation in successive layers. [38]
The Withrow Moraine and Jameson Lake Drumlin Field National Natural Landmark is located on the Waterville Plateau, which lies in the northwest corner of the Columbia River Plateau. The plateau is formed on top of the Columbia River Basalt Group a large igneous province that lies across parts of the states of Washington , Oregon , and Idaho in ...
Drumlin – Elongated hill formed by glacial action and drumlin field – Elongated hill formed by glacial action; Esker – Long, winding ridge of stratified sand and gravel associated with former glaciers; Fjord – Long, narrow inlet with steep sides or cliffs, created by glacial activity
Till plains are also the location in which drumlins, drumlin fields, flutes, and additional moraines form, all composed of glacial till. [4] The material composition of till plains vary greatly, and is dependent on the travel path of the transporting glacier, indicated by the provenance of the deposited material.