التركية - الإنجليزية
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- drumlin
- Irish term for a small hill Consists of glacial drift shaped by ice action into a "hog- back", which is oval in plan and has its long axis pointing in the direction of ice movement Drumlins often occur in groups
- A low, smooth, elongated oval hill, mound, or ridge of compact till that may or may not have a core of bedrock or stratified drift The longer axis is parallel to the general direction of glacier flow Drumlins are products of streamline (laminar) flow of glaciers, which molded the subglacial floor through a combination of erosion and deposition
- An oval or elongated hill of glacial drift The long axis of the hill shows the direction of glacial movement The blunt end of the drumlin points "upstream" (toward the origination of glacial movement), and the more tapered end of the drumlin points "downstream " Drumlins probably migrated across the landscape with, but more slowly than, the glaciers which created them
- stretched out hill made of glacial till in the direction of glacial movement
- A whaleback hillock of till
- An elongated hill or ridge of glacial drift
- A streamlined, spoon shaped hill created by glacial deposition The steep side of a drumlin faces in the direction from which the glacier came The process that forms drift drumlins is still debated by glaciologists The most popular explanation is that the pressure of the ice overriding existing moraines, drift, and till is sufficient to deform them and mold them into elongate ridges They are steeper on the upslope side because that is where the greatest pressure is exerted by the flowing ice
- A long, spoon-shaped hill that develops when pressure from an overriding glacier reshapes a moraine Drumlins range in height from 5 to 50 meters and in length from 400 to 2000 meters They slope down in the direction of the ice flow
- a mound of glacial drift
- A low, smoothly rounded, elongate hill of compact glacial till built under the margin of the ice and shaped by its flow; its longer axis is parallel to the direction of ice movement It has a blunt nose which points in the direction from which the ice approached, and a gentler slope tapering in the other direction
- An elongated, teardrop-shaped hill These streamlined hills were sculpted in the direction of glacial ice movement They often occur in groups, known as swarms Because drumlins generally form miles behind (or "up-ice" from) an end moraine, they are rare along the Ice Age Trail The Farmington Drumlins, in Waupaca County, is the largest swarm of drumlins along existing segments of the Ice Age Trail State highway 60, between Columbus and Hartford, and interstate highway 94 between Madison and Sussex, cross one of the largest drumlin swarms in the world
- A streamlined, oval-shaped hill composed of boulder clay (and occasionally solid rock) Its long axis is parallel to the direction of flow of the ice sheet beneath which it formed
- A hill of compact, unstratified, glacial drift or till, usually elongate or oval, with the larger axis parallel to the former local glacial motion
- A hill shaped deposit of till The shape of these features resembles an elongated teaspoon laying bowl down The tapered end of the drumlin points to the direction of glacial retreat Drumlins come in assorted sizes Lengths can range from 100 to 5,000 meters and heights can be as great as 200 meters
- n an elongated hill or ridge, steepest on one side, created by the movement of glaciers
- {i} long narrow hill or ridge created by glacial action (Geology)