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The Håkon Mosby Mud Volcano

  • J. Mienert
  • J. A. Dowdeswell
  • J. Taylor

Abstract

Fluid escape features such as mud volcanoes have been discovered along many active continental margins but rarely along passive continental margins. Seismic and sidescan sonar data are presented from a fluid escape system situated on the passive Norwegian-Barents Sea continental margin (Fig. 1). This fluid system supports bacterial communities (Fig. 2), causes rock alteration via fluids and gas flow (Fig. 2), drives eruptive processes at surface (Fig. 3) and in subsurface sediments (Fig. 4) and contributes to the development of gas hydrates (Fig. 5) (Mienert et al. 2001). To understand the complex dyn amics of such a fluid system we need to understand its history. The Håkon Mosby mud volcano (HMMV) provides an opportunity for long-term observations of the dynamics of a fluid system developed on a passive margin.
Fig. 1.

Location map of the Håkon Mosby Mud Volcano (HMMV) on the Norwegian-Barents Sea continental margin

Fig. 2.

Seafloor photograph of the inner part (caldera) of the Håkon Mosby Mud Volcano showing white bacteria mats and a heatflow probe measurement

Keywords

Continental Margin Fluid System Active Continental Margin Passive Continental Margin Sidescan Sonar 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Dowdeswell JA, Kenyon NH, Elverhoi A, Laberg JS, Hollender FJ, Mienert J, Siegert MJ (1996) Large-scale sedimentation on the glacier-influenced Polar North Atlantic margins: long-range side-scan sonar evidence. Geophysical Research Letters 23: 3535–3538CrossRefGoogle Scholar
  2. Hjelstuen BO, Eldholm O, Faleide JI, Vogt PR (1999) Regional setting of Håkon Mosby Mud Volcano, SW Barents Sea Margin. Geo-Marine Letters 19: 22–28CrossRefGoogle Scholar
  3. Laberg JS, Vorren TO (1993) A Late Pleistocene submarine slide on the Bear Island Trough Mouth Fan. Geo-Marine Letters 13: 227–234CrossRefGoogle Scholar
  4. Mienert J, Posewang J, Lukas D (2001) Changes in the hydrate stability zone on the Norwegian Margin and their consequence for methane and carbon releases into the oceanosphere. In: Schäfer P, Ritzrau W, Schlüter M, Thiede J (eds) The Northern North Atlantic: a changing environment. Springer, Berlin Heidelberg New York, pp 281–290Google Scholar
  5. Vogt PR, Crane K, Ptirman S, Sundvor E, Cherkis N, Fleming H, Nishimura C, Shor A (1991) Sea MARCII sidescan sonar imagery and swath bathymetry in the Nordic Basin. EOS 72: 486CrossRefGoogle Scholar
  6. Vogt PR, Gardner J, Crane K (1999) The Norwegian-Barents-Svalbard (NBS) continental margin: introducing a natural laboratory of mass wasting, hydrates, and ascent of sediment, pore water, and methane. Geo-Marine Letters 19: 2–21CrossRefGoogle Scholar
  7. Vorren TO, Laberg JS, Blaume JA, Dowdeswell NH, Kenyon NH, Mienert J, Rumohr J, Werner F (1998) The Norwegian-Greenland Sea continental margins: morphology and late Quaternary sedimentary processes and environment. Quaternary Science Reviews 17: 273–302CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • J. Mienert
    • 1
  • J. A. Dowdeswell
    • 2
  • J. Taylor
    • 2
  1. 1.Department of GeologyUniversity of TromsøNorway
  2. 2.Bristol Glaciology CentreUniversity of BristolUK

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