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The Kveithola Drift (western Barents Sea): Preliminary results from the CORIBARCruise
Hanebuth, T.J.J.; Rebesco, M.; Grave, M.; Özmaral, A.; Lucchi, R.G.; CORIBAR Team (2014). The Kveithola Drift (western Barents Sea): Preliminary results from the CORIBARCruise, in: Van Rooij, D. et al. (Ed.) Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014. VLIZ Special Publication, 69: pp. 63-64
In: Van Rooij, D.; Rüggeberg, A. (Ed.) (2014). Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014. VLIZ Special Publication, 69. Ghent University, Department of Geology and Soil Science/Flanders Marine Institute (VLIZ): Oostende. xviii, 152 pp.
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer
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Documenttype: Samenvatting
Trefwoorden
    Geological time > Phanerozoic > Geological time > Cenozoic > Quaternary > Holocene
    PNE, Barents Sea
    Barentsz Sea [Marine Regions]
    Marien/Kust
Author keywords
    Shallow-water contourites; Ice-stream trough; Dense-flow cascading
Auteurs  Top 
  • Hanebuth, T.J.J.
  • Rebesco, M.
  • Grave, M.
  • Özmaral, A.
  • Lucchi, R.G.
  • CORIBAR Team
Abstract
    The CORIBAR cruise (08/2013) addressed ice dynamics and meltwater deposits by coring inside the narrow (100km long, 13km wide) glacially eroded Kveithola Trough, NW Barents Sea. During this cruise, geophysical data (PARASOUND sub-bottom and multibeam profiles) and sediment cores were also collected from the Kveithola Drift. This drift is a complex morphological sediment body confined to the innermost part of the Kveithola Trough. It consists of two main depocenters separated by a buried glacigenic grounding-zone wedge. The internal acoustic reflections show a drastic thinning, i.e. longterm condensation, towards the northern flank of the Kveithola Trough. Here, a distinct E-W running moat is developed which underlines the strong influence of dense bottom currents on sedimentation. On the contrary, some of the characteristics of sedimentary facies and preserved biota in the surface sediments of the Kveithola Drift hint to a stagnant environment, strongly affected by low-oxygen conditions. The PARASOUND data and sediment cores from this intriguing sediment drift are expected to contain a high-resolution record of the drift formation processes as well as the Holocene palaeo environmental changes.
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