Paleontological Journal

, Volume 47, Issue 10, pp 1187–1197 | Cite as

Quaternary paleoceanology of Benguela upwelling based on microfossils (borehole 362 DSDP)

  • N. S. OskinaEmail author
  • O. B. Dmitrenko
  • N. P. Lukashina


The study of the upper part of the section of borehole 362 DSDP (southeastern Atlantic) allowed the recognition of five zonal units in the Quaternary based on nannofossils and refinement of the UpperLower Pleistocene boundary based on benthic foraminifers. The study of planktonic and benthic foraminifers in sediments display the history of the Benguela upwelling. The temperature of the surface water layer reconstructed based on Upper Pleistocene planktonic foraminifers reaches 17°–19°C and decreases downward in the section to 2°–3°C, suggesting that, in the Early Pleistocene, the upwelling was more extensive in area. The increasing proportion of benthic foraminifers and large nannofossils downward in the section is evidence of more active dissolution of carbonates in the Early Pleistocene and the high content of terrigenous matter suggests that the Benguela Current occupied a westerly position. The existence of the Benguela upwelling throughout the Late Pliocene-Pleistocene was accompanied by a decrease in its activity.


Foraminifera microfossils Quaternary Benguela upwelling 


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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • N. S. Oskina
    • 1
    Email author
  • O. B. Dmitrenko
    • 1
  • N. P. Lukashina
    • 2
  1. 1.Shirshov Institute of OceanologyRussian Academy of SciencesMoscowRussia
  2. 2.Atlantic Department, Shirshov Institute of OceanologyRussian Academy of SciencesKaliningradRussia

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