On the origin and flow behavior of submarine slides on deep-sea fans along the Norwegian–Barents Sea continental margin

Geo-Marine Letters - Tập 17 - Trang 119-125 - 1997
A. Elverhøi1, H. Norem2, E. S. Andersen1, J. A. Dowdeswell3, I. Fossen4, H. Haflidason5, N. H. Kenyon6, J. S. Laberg7, E. L. King5, H. P. Sejrup5, A. Solheim4, T. Vorren7
1Department of Geology, Box 1047, University of Oslo, Blindern, 0316 Oslo, Norway, , NO
2Norwegian Geotechnical Institute, Box 3930 Ullevaal Hageby, 0806 Oslo, Norway Present address: Dr. Ing Harald Norem Ltd. Fuglsetbakken 41, 6400 Molde, Norway, , NO
3Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB Wales, UK, , GB
4Norwegian Polar Institute, P.O. Box 5072 Majorstua, N-0301 Oslo, Norway, , NO
5Department of Geology, University of Bergen, Allegt.41, N-5007 Bergen, Norway, , NO
6Southampton Oceanography Centre, Empress Dock, Southampton, SO14 3ZH, UK, , GB
7Institute of Biology and Geology, University of Tromsø, N-9037, Tromsø, Norway, , NO

Tóm tắt

 Debris lobes with characteristic lengths, widths, and thickness of 30–200 km, 2–10 km, and 10–50 m, respectively, represent the main building blocks of deep-sea fans along the Norwegian–Barents Sea continental margin. Their formation is closely related to the input of clay-rich sediments to the upper continental slope by glaciers during periods of maximum ice advance. It is likely that slide release was a consequence of an instability arising from high sedimentation rates on the upper continental slope. The flow behavior of the debris lobes can be described by a Bingham flow model.

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Geo-Marine Letters

Tập 17

119-125

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