Briefly describe the following glacial features associated with ice sheets: terminal moraine, kettle, drumlin, outwash plain, esker, and kame. The long axis of a drumlin is aligned with the direction of glacier movement. The long axis of the drumlin indicates the direction in which the glacier was moving. Briefly describe the following glacial features associated with mountain glaciers: cirque, arete, horn, hanging valley, lateral moraine, medial moraine. 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. Cirques are the bowl shaped depressions found at the head of glacial valleys. Esker: A long narrow ridge, often sinuous, composed of stratified sediment and marking the former location of a glacial tunnel. More than a thousand eskers have been found in Michigan. 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". The eskers resemble the features of an embankment and are often used for making roads. The Irish word was and is used particularly to describe long sinuous ridges, which are now known to be deposits of fluvio-glacial material. D 29 Which of the following features is a result of glacial deposition A) erratic B) arête C) cirque D) horn A 30 Drumlin a. Kettles, kames, and eskers b. Moraines, erratics, and drumlins c. Tarns, hanging valleys, and horns d. Roches moutonnées, arêtes, and fjords. a. Drumlins are hills made of glacial sediment and till, while eskers are long ridges of glacial drift. Drumlins and eskers are found in glacial areas. b. List four depositional features other than moraines. - Drumlins, Eskers, Kames, Kettle Holes. In low-lying, boggy terrain these snaking ridges dominate the terrain, providing vantage points and dry route ways. Changes to the valleys and rivers are contributed by the glaciers, obliterating the former valleys and streams. Esker. Drumlin An elongated hill of glacial till formed by the re-advance of a glacier over existing till deposits. Ground moraine with drumlins and till-covered bedrock rises (Fig. Which features form by deposition from glacial meltwater? 2-3.2 Glacial History In the last approximately one million years, there have been four glacial advances across central and eastern North America. List four effects of Ice Age glaciers aside from the formation of major erosional and depositional features. Broken ridges or un-assorted depositions looking like hump in a till plain. 14. Drumlins are elongated hills of glacial deposits. Which of the following features are typical of both alpine and continental glaciation ? Most eskers are on till plains although some are known to cut through moraines and even cross drumlins. running along a glacier in a till plain. Some of the other features associated with glacier erosion in alpine regions are cirques, horns, and arêtes (Figure 10af-3). 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. For most alpine glaciers, cirques are the areas in the alpine valleys where snow first accumulated and was modified into glacial ice. What typically happens to global sea level during an ice age? 22) comprise most of the area up-ice from the front of both lobes. 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