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Products and Effects of Modern Eolian Activity on a Nineteenth-Century Glacier-Pushed Ridge in West Spitsbergen, Svalbard
P. A. Riezebos, G. S. Boulton, J. J. M. van der Meer, G. H. J. Ruegg, D. J. Beets, I. I. Y. Castel, J. Hart, I. Quinn, M. Thornton and F. M. van der Wateren
Arctic and Alpine Research
Vol. 18, No. 4 (Nov., 1986), pp. 389-396
Published by: INSTAAR, University of Colorado
Stable URL: http://www.jstor.org/stable/1551088
Page Count: 8
You can always find the topics here!Topics: Sand, Sediments, Glacial landforms, Mud flats, Silts, Aeolian transport, Mica, Wind erosion, Alpine glaciers, Geology
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A 1-km-wide glacier-pushed complex produced by a surge of Holmströmbreen in Ekmanfjorden (Spitsbergen) is suffering deflation, which is tending to plane off the original relief and to truncate folded structures in the pushed complex. Similar rapid eolian erosion could account for planation of the Saalian pushed ridges in The Netherlands. The resultant eolian sediments are dispersed onto mudflats beyond the pushed complex. Part of the coarse-silt and fine-sand fractions seems to be transported farther and is probably blown out into the fiord. The coarser sand fractions are deposited closer to the source and tend to lose their mica components rapidly, presumably due to differentiation during transport and/or grain comminutions. The textures of the wind-blown sands approximate rather closely those of a number of Dutch coversand.