what do you know about the work of glaciers?
Answers
Answer:
Depositional Work of a Glacier:
i. Moraines: On melting, glacier deposits its debris in the form of a heap. Rocks deposited are not uniform, and are of several types and different colours e.g. ...
ii. Esker: Sometimes, ice melts at the lower parts of the glacier and water starts flowing beneath the ice forming tunnels in the glacier.
iv. Kame: When glacier melts, the soil and other items of debris deposited in the cracks, get deposited in form of mound.
Answer:A glacier (US: /ˈɡleɪʃər/ or UK: /ˈɡlæsiər, ˈɡleɪsiər/) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow under stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.
On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent including Oceania's high-latitude oceanic island countries such as New Zealand. Between latitudes 35°N and 35°S, glaciers occur only in the Himalayas, Andes, Rocky Mountains, a few high mountains in East Africa, Mexico, New Guinea and on Zard Kuh in Iran.[1] Glaciers cover about 10% of Earth's land surface. Continental glaciers cover nearly 13 million km2 (5 million sq mi) or about 98% of Antarctica's 13.2 million km2 (5.1 million sq mi), with an average thickness of 2,100 m (7,000 ft). Greenland and Patagonia also have huge expanses of continental glaciers.The volume of glaciers, not including the ice sheets of Antarctica and Greenland, has been estimated at 170,000 km3.
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