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A nunatak (from Inuit nunataq) is the summit or ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain or ridge. They often form natural pyramidal peaks .
Boreas Nunatak (coordinates: 71°18′S 3°57′W) is a 220-metre-high (720 ft) nunatak, nearly 1 mile (1.6 km) southwest of Passat Nunatak at the mouth of Schytt Glacier in Queen Maud Land. It was discovered by the Third German Antarctic Expedition (1938–1939), led by Capt. Alfred Ritscher , and named after Boreas , one of the Dornier flying ...
A nunatak is a type of glacial refugium that is located on the snow-free, exposed peaks of mountains, which lie above the ice sheet during glaciations. [3] The identification of ‘diversity hotspots’ in areas, which should have been migration regions during major glacial episodes, is evidence for nunatak glacial refugia. [ 14 ]
A nunatak rising to about 1,500 metres (4,900 ft) high, 1.5 nautical miles (2.8 km; 1.7 mi) north-northeast of Schmutzler Nunatak in the southeast end of the Grossman Nunataks. Mapped by USGS from surveys and United States Navy aerial photographs, 1961-68, and Landsat imagery, 1973-74.
In biogeography, particularly phytogeography, the nunatak hypothesis about the origin of a biota in formerly glaciated areas is the idea that some or many species have survived the inhospitable period on icefree land such as nunataks. [1]
Svarthamaren Mountain is a prominent ice-free mountain or large nunatak on the east side of the mouth of Vestreskorve Glacier in the Muhlig-Hofmann Mountains of Queen Maud Land, Antarctica. It was mapped from surveys and aerial photographs by the Norwegian Antarctic Expedition (1956–60) and named Svarthamaren ("black cliff").
A somewhat isolated nunatak, situated 3 nautical miles (5.6 km; 3.5 mi) west-northwest of Doescher Nunatak and 15 nautical miles (28 km; 17 mi) north-northwest of Mount Weihaupt. Named by US-ACAN after Wilfred I. Doe, United States Navy, hospital corpsman with the McMurdo Station winter party, 1967. [14]
A small nunatak 1.5 nautical miles (2.8 km; 1.7 mi) southwest of Jurassic Nunatak in the west extremity of the Yee Nunataks. Named by US-ACAN in 1987 after the Triassic Period in geological time and in association with Jurassic Nunatak. The name does not imply the age of the rock constituting this feature. [3]