Fróðskaparrit - 01.01.1998, Qupperneq 207

Fróðskaparrit - 01.01.1998, Qupperneq 207
HÁLENDISVINDBORIN SETLØG í FØROYUM 213 Scotland, and thus they may also partly be niveo-aeolian in origin. The ages of the ae- olian deposits are not yet determined in de- tail, but the existence of early to mid Holocene peat layers below some of the sheets of these windblown sediments indi- cates that some of them are of mid to late Holocene age. Probably they might to a large extent be accumulated due to late Holocene climatic deterioration, such as occurred e.g. in the Little Ice Age, but also due to the general cooling following the early to mid Holocene climatic optimum. Implications and perspectives Further detailed studies of the aeolian de- posits are expected to significantly increase knowledge of environmental changes in the Faroe Islands. More detailed reconstruc- tions of the dominating palaeo-wind direc- tions, and periods of high wind activity will be possibie, just as information on Holo- cene flora presumably will be available from pollen analyses. Likewise studies of these deposits should be able to contribute to determine the effect of human settlement on landscape development and thus on the ecological balance. This is because the ae- olian deposits occur both in areas of the landscape that can have been influenced by man, but also in remote parts most likely not affected very much by settlement. Acknowledgements The present study forms part f a post.doc. project on periglacial landscapa analysis with particular emphasis on sediment flux in the Scottish and Faroese part of the North Atlantic area, funded by the Danish Natural Sci- ence Research Council. Fieldwork was carried out dur- ing a half year stay at the Faroese Museum of Natural History, Tórshavn. References Ballantyne, C.K. and Whittington, G. 1987. Niveo-aeo- lian sand deposits on An Tellach, Wester Ross, Scotland. Transactions ofthe Royal Society ofEdin- burgh: Earth Sciences, 78, 51-63. Ballantyne, C.K. and Harris, C. 1994. The Periglacia- tion ofGreat Britain. Cambridge University Press. Ballantyne, C.K. 1998. Aeolian deposits on a Scottish mountain summit: Characteristics, provenance, his- tory and significance. Earth Surface Processes and Landforms 23: 625-641. Christiansen, H.H. and Svensson, H. 1998. Wind- polished boulders as indicators of a Late Weichse- lian Wind Regime in Denmark in relation to neigh- bouring areas. Permafrost and Periglacial Process- es, 9, 1-21. Geikie, J. 1883. On the Geology of the Færoe Islands. Transactions of the Royal Society in Edinburgh, 217-269. Humlum, O., Christiansen, H.H., Svensson, H. and Mortensen, L.E. 1996. Moraine Systems in the Faroe Islands: Glaciological and Climatological Im- plications. Danish Journal of Geography, 96, 21-31. Humlum, O. and Christiansen, H.H. 1998. Late Holo- cene climatic forcing of geomorphic activity in the Faroe Islands. Fróðskaparrit 46: 169-189. Humlum, O. and Christiansen, H.H. in press. Observa- tions on Mountain Climate and Periglacial Pheno- mena in the Faeroe Islands, SE North Atlantic Ocean. Permafrost and Periglacial Processes. Johansen, J. 1985. Studies of the vegetational history of the Faroe and Shetland Islands. Annales Societatis Scientiarum Færoensis Supplementum XI. Pye, K. and Paine, A.D.M. 1983. Nature and source of aeolian deposits near the summit of Ben Arkle, Nortwest Scotland. Geologie en Mijnbouw, 13-18. Søgaard, H. 1996. Klima, vejr og vejrlig pá Færøerne. In Guttesen, R. (ed.) Topografisk Atlas Færøerne. At- las over Danmark Serie II, Bind 5, Det Kongelige Danske Geografiske Selskab og Kort og Matrikel- styrelsen, 24-27.
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