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Drumlins are smooth, oval shaped, streamline hills composed of dense (basal or lodgement) till. The longer axis is parallel to the path of the glacier and commonly has a blunt nose pointing in the direction from which the ice approached (north-west to south-east in the maps above and below). Drumlins are products of streamline (laminar) flow of glaciers, which molded the subglacial floor through a combination of erosion and deposition. Soils commonly mapped on Drumlins include Paxton, Woodbridge, Scituate, and Pittstown series. More info on drumlin tills.
3-Dimensional view of a series of drumlins in Worcester County Massachusetts, note the orientation of Turkey Hill and other drumlins (northwest to southeast).
A swarm of Drumlins in Canada, orientation is NE to SW (Photo Source: Her Majesty the Queen in Right of Canada, reproduced from the collection of the National Air Photo Library with permission of Natural Resources of Canada).
A Drumlin in Worcester County, Massachusetts.
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