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The Continental Sedimentary Environment
Published in Aurèle Parriaux, Geology, 2018
In front of valley glaciers, the glacial torrent builds an alluvial plain that is affected by the same mechanisms described for ordinary alluvial plains (Section 8.3). Two major differences must be pointed out, however: The water-transported components have not had time to be weathered and rounded like alluvium;Sediments are often deposited on dead ice (immobile masses of ice that are no longer in contact with the active glacier); as the ice melts the sediments move. Beds tilt, faults and folds occur, etc. (Fig. 8.63).
The Continental Sedimentary Environment
Published in Aurèle Parriaux, Geology, 2018
In front of valley glaciers, the glacial torrent builds an alluvial plain that is affected by the same mechanisms described for ordinary alluvial plains (Section 8.3). Two major differences must be pointed out, however: The water-transported components have not had time to be weathered and rounded like alluvium;Sediments are often deposited on dead ice (immobile masses of ice that are no more in contact with the active glacier); as the ice melts the sediments move. Bed tilt, faults and folds occur, etc. (Fig. 8.62).
Design of axially loaded piles — Norwegian practice
Published in F. De Cock, C. Legrand, Design of Axially Loaded Piles European Practice, 2020
Arne Schram Simonsen, Corneliu Athanasiu
The thickness of the soil deposits above the marine limit is generally less and more patchy than in the lowlands. The geology in these areas is dominated by glacial tills, glacifluvial sediments or dead-ice deposits from a stagnating glacier. Lacustrine clays and silts are scarce, but can be found in or near existing lakes or previous glacial lakes.
Drumlins in the Nordenskiöldbreen forefield, Svalbard
Published in GFF, 2018
Lis Allaart, Nina Friis, Ólafur Ingólfsson, Lena Håkansson, Riko Noormets, Wesley R. Farnsworth, Jordan Mertes, Anders Schomacker
The heterogeneous diamicton of unit 1 in section 1, characterized by low amount of clay and silt (7–14%) in the matrix and the interbedded lenses of sorted sediments, is interpreted as a melt-out till. The origin of the material is interpreted as an ice-marginal or supraglacial debris, as suggested for similar deposits by e.g., Johnson et al. (1995), Krüger and Kjær (1999), and Schomacker and Kjær (2008). Similar material (occurring within the map unit hummocky moraine: early and developed stage) is found on the surface in the marginal areas of the northern part of the forefield and in extensive dead-ice areas in the southern part of the forefield (Fig. 6 and Ewertowski et al. 2016).