Nunatak
A nunatak (from Inuit nunataq) is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within (or at the edge of) an ice field or glacier. The term is typically used in areas where a permanent ice sheet is present. Nunataks present readily identifiable landmark reference points in glaciers or ice caps and are often named.
Lifeforms on nunataks are frequently isolated by the surrounding ice or glacier creating unique habitats. Nunataks are generally angular and jagged because of freeze-thaw weathering, and can be seen to contrast strongly with the softer contours of the glacially eroded land below if the glacier retreats.
The word is of Greenlandic origin,[2] and has been used in western European languages since the 1870s.
References in literature
- South: The Endurance Expedition. Sir Ernest Shackleton Penguin, London, 2002, (First edition, William Heinimann, 1909).
- The Worst Journey in the World. Apsley Cherry-Garrard. Pimlico, London, 2003.
- The South Pole. Roald Amundsen. John Murray, London, 1929 (mentioned on page 247, volume 2: Chapter XV: The Eastern Sledge Journey, by Lt. Kristian Prestrud)
See also
References
- ^ Vieira, G.T.; Ferreira, A.B. (1998). "General characteristics of the glacial geomorphology of the Serra da Estrela". In Vieira G.T. (ed.). Glacial and Periglacial Geomorphology of the Serra da Estrela. Guidebook for the field-tripIGU Commission on Climate Change and Periglacial Environments, 26-28 August1998 (PDF). pp. 37-48.
{{cite book}}: C1 control character in|pages=at position 4 (help) - ^ Merriam-Webster: nunatak [1]
 | This glaciology article is a stub. You can help Wikipedia by expanding it. |
 | This article related to topography is a stub. You can help Wikipedia by expanding it. |