Jökull


Jökull - 01.12.1985, Page 13

Jökull - 01.12.1985, Page 13
strandir coast and, furthermore, seems to have been of the opinion that the ice cap had not extended far beyond the present coast. He also thought that the ice cap had been continuous and that nunataks could only have existed between the outlet glaciers, close to the edge of the ice cap. Thoroddsen’s views were later modified by Thór- arinsson (1937), who suggested that during the last glaciation the Vestfirdir peninsula was characterized by small ice-fields on the plateaux between the fjords, while the whole central area was covered by a large continuous ice cap. Outlet glaciers flowed from the central highlands through the fjords, gradually leaving more space for local glaciers and nunataks. Thórarins- son also drew attention to observations made by Keilhack (1933) and Iwan (1936) on the number and distribution of cirques on Vestfirdir. These become more numerous towards the mouths of valleys and fjords. Later workers (Th. Einarsson 1961,1963, 1967,1968, John 1977a, Hoppe 1968, 1983, Andersen 1981) have to a large extent echoed Thórarinsson’s (1937) results, though with some modifications. Andersen (1981) and Hoppe (1983) suggested a larger extent of the ice onto the shelf during the Weichselian maximum than can be inferred from Thórarinsson’s (1937) or Th. Einarsson’s (1967, 1968) results. Th. Einarsson (1961) and Steindórsson (1962, 1963) suggested the possibility of relatively large ice-free areas on Vestfirdir during the Weichselian. Sugden and John (1976) used Vestfirdir as an example of glacial land- scape evolution in mountains near the periphery of an ice sheet; a point of view which recognizes ice-free areas in environments with predominantly alpine-type glacial erosion. John (1975) recognized three different types of glacial erosion on Vestfirdir. He included Hornstrandir among alpine-type landscapes, where glaciation was characterized by a high density of glaciers with a low to moderate discharge. In a later paper (John 1977a) he stated that it was unlikely that there were any large JÖKULL 35. ÁR 11
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