Drumlin An elongated hill of glacial till formed by the re-advance of a glacier over existing till deposits. In low-lying, boggy terrain these snaking ridges dominate the terrain, providing vantage points and dry route ways. Drumlins and eskers are found in glacial areas. They can be 1 km long and 500 metres wide, often occurring in groups. running along a glacier in a till plain. D 29 Which of the following features is a result of glacial deposition A) erratic B) arête C) cirque D) horn A 30 14. Drumlin More than a thousand eskers have been found in Michigan. These units are: ground moraine and drumlins, stratified drift, end moraine and stagnate-ice or dead-ice moraine, and special features such as moulin kames, eskers, and crevasse fills. A) striations and erratics B) drumlins and cirques ... drumlins B) striations C) eskers D) kettles . Broken ridges or un-assorted depositions looking like hump in a till plain. Winding ridge of un-assorted depositions of rock, gravel, clay etc. Which features form by deposition from glacial meltwater? Briefly describe the following glacial features associated with ice sheets: terminal moraine, kettle, drumlin, outwash plain, esker, and kame. The long axis of the drumlin indicates the direction in which the glacier was moving. What typically happens to global sea level during an ice age? Esker: A long narrow ridge, often sinuous, composed of stratified sediment and marking the former location of a glacial tunnel. Which of the following features are typical of both alpine and continental glaciation ? 2-3.2 Glacial History In the last approximately one million years, there have been four glacial advances across central and eastern North America. The esker (Ir. a. Some of the other features associated with glacier erosion in alpine regions are cirques, horns, and arêtes (Figure 10af-3). These would have been part of the debris that was carried along and then accumulated under the ancient glacier. 22) comprise most of the area up-ice from the front of both lobes. For most alpine glaciers, cirques are the areas in the alpine valleys where snow first accumulated and was modified into glacial ice. Changes to the valleys and rivers are contributed by the glaciers, obliterating the former valleys and streams. Most eskers are on till plains although some are known to cut through moraines and even cross drumlins. The Irish word was and is used particularly to describe long sinuous ridges, which are now known to be deposits of fluvio-glacial material. It decreases. b. List four depositional features other than moraines. Drumlins are elongated hills of glacial deposits. a. Kettles, kames, and eskers b. Moraines, erratics, and drumlins c. Tarns, hanging valleys, and horns d. Roches moutonnées, arêtes, and fjords. Cirques are the bowl shaped depressions found at the head of glacial valleys. - Drumlins, Eskers, Kames, Kettle Holes. - Large amount of the water trapped by the glaciers from the water cycle. Drumlins are hills made of glacial sediment and till, while eskers are long ridges of glacial drift. It increases. They vary in length from a fraction of a mile to scores of miles, and in height from a few feet up to several hundred and more feet. The term esker is derived from the Irish word eiscir (Old Irish: escir), which means "ridge or elevation, especially one separating two plains or depressed surfaces". List four effects of Ice Age glaciers aside from the formation of major erosional and depositional features. Eiscir) is one of the most striking landforms of fluvioglacial deposition. The long axis of a drumlin is aligned with the direction of glacier movement. Kame Terraces. Ground moraine with drumlins and till-covered bedrock rises (Fig. Eskers on paleo-ice-sheet beds are more abundant in areas of crystalline bedrock with thin coverings of surficial sediment than in areas of thick deformable sediment e.g., 9,4.This is because meltwater flowing at the bed is more likely to incise upwards into the ice to form an R-channel where the bed is hard; where the bed is deformable, meltwater is more likely to incise downwards 10. The eskers resemble the features of an embankment and are often used for making roads. Esker. 15. Briefly describe the following glacial features associated with mountain glaciers: cirque, arete, horn, hanging valley, lateral moraine, medial moraine.