Slide and canyon deposits on the Lofoten-Vesterålen margin, North Norway

• Valérie Bellec ^[1] ; Leif Rise ^[1] ; Reidulv Bøe ^[1] ; Margaret Dolan ^[1] ; Terje Thorsnes ^[1]
  1. [1] Geological Survey of Norway
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 11, 2010 (Ejemplar dedicado a: Deep-Water Circulation: Processes & Products. International Congress. Baitona, Pontevedra, Spain. 16 & 17 June 2010), págs. 17-18
• Idioma: inglés
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• Resumen

  • High-resolution multibeam data acquired on the Norwegian continental margin northwest of the Lofotenand Vesterålen Islands reveal many canyons and slides and their associated deposits in the deep-sea plain. Slideand canyon deposits may comprise cobbles and boulders of morainic origin as well as blocks of compactedsediments. Recent hemipelagic deposits are only a few millimetres thick and mainly occur in depressions showingthe influence of currents at depth deeper than 2000 m. Currents clearly erode sediments at the foot of the slope.Sediment transport from canyons is evident from multibeam data. Channels of different sizes occur, the largest onebeing the Lofoten Channel continuing west of the canyon Bleiksdjupet.