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The Ioffe calcareous contourite drift, western south Atlantic
Murdmaa, I.; Borisov, D.; Ivanova, E.; Levchenko, O.V.; Dmitrenko, O.; Emelyanov, E. (2014). The Ioffe calcareous contourite drift, western south Atlantic, 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. 75-76
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., meer
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer
Beschikbaar in  Auteurs 
Documenttype: Samenvatting
Trefwoorden
    Hiatuses
    Marien/Kust
Author keywords
    Seismic profiling; Sediment core; AABW; Hiatus; Unconformity
Auteurs  Top 
  • Murdmaa, I.
  • Borisov, D.
  • Ivanova, E.
  • Levchenko, O.V.
  • Dmitrenko, O.
  • Emelyanov, E.
Abstract
    The high resolution seismic profiling during cruise 32 of the R.V. Akademik Ioffe (2010) revealed the Ioffe contourite drift deposited by Antarctic Bottom Water (AABW) current flowing out from the Vema Channel. Alternating stratified and transparent seismic units are separated by unconformities. Core AI-2436 retrieved near the drift top, at the water depth of 3800m, recovered Upper Pliocene – Quaternary section of nanno-foraminiferal ooze with foraminiferal sand interbeds interrupted by longterm hiatuses. Along with unconformities, stratigraphic hiatuses suggest erosion by intensified bottom currents.
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