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SW Barents Sea continental margin heat flow and Håkon Mosby Mud Volcano

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Abstract

 The high thermal gradient and heat flow >1000 mW m-2 on Håkon Mosby Mud Volcano are ascribed to rapid transport of pore water, mud, and gas in a narrow, deep conduit within a 3.1-km-thick glacial sediment unit. The instability is caused by rapid loading of dense glacial sediments on less dense oozes. Changes in pressure–temperature conditions by sudden, large-scale downslope mass movement may induce structural deformation, opening transient pathways from the base of the glacial sediments to the sea floor. This model may also explain slope maxima elsewhere on the margin.

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Authors and Affiliations

  1. Department of Geology, University of Oslo, POB 1047 Blindern, N-0316 Oslo, Norway, , , , , , NO

    O. Eldholm, A. K. Nilsen & T. P. Gladczenko

  2. Institute of Solid Earth Physics, University of Bergen, Allegt. 41, N-5007 Bergen, Norway, , , , , , NO

    E. Sundvor

  3. Naval Research Laboratory, Washington, DC 20375, USA, , , , , , US

    P. R. Vogt & K. Crane

  4. A. S. Geoconsult, Nedre Åstveit 12, N-5083 Øvre Ervik, Norway, , , , , , NO

    B. O. Hjelstuen

Authors
  1. O. Eldholm
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  2. E. Sundvor
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  3. P. R. Vogt
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  4. B. O. Hjelstuen
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  5. K. Crane
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  6. A. K. Nilsen
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  7. T. P. Gladczenko
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Eldholm, O., Sundvor, E., Vogt, P. et al. SW Barents Sea continental margin heat flow and Håkon Mosby Mud Volcano. Geo-Marine Letters 19, 29–37 (1999). https://doi.org/10.1007/s003670050090

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  • DOI: https://doi.org/10.1007/s003670050090

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