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The Eocene–Oligocene Climate Transition in the Southern Tethys: Calcareous Nannofossil Response and Element Geochemistry

  • Jihede Haj MessaoudEmail author
  • Chokri Yaich
  • Johannes Monkenbusch
  • Nicolas Thibault
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The late Eocene—Early Oligocene transition is characterized by the transient changes in the environmental conditions from greenhouse to icehouse controlled by the onset of the major Antarctic glaciation phase (~34 Ma). The effects of this major climatic transition in Earth history have not been studied so far in the southern Tethys. Here, we present new data from the Ain Rahma section (Northeastern Tunisia, Cap Bon peninsula) across the Late Eocene—Early Oligocene. Calcareous nannofossil biostratigraphy permits an excellent detection of the paleoclimatic events of this transition. Hand-held X-ray Fluorescence (HH-XRF) analysis is used to show changes in detrital elements across the transition (Fe, Si, Al, Zr). Two major changes are recorded in the studied interval corresponding to the Eocene/Oligocene transition 1 event (EOT1) and to the Oi-1 glaciation event. Both depicted by important shifts in detrital elements and calcareous nannofossil assemblages.

Keywords

Southern tethys Eocene oligocene boundary Calcareous nannofossil Trace elements Paleoclimate 

References

  1. 1.
    Agnini, C., Fornaciari, E., Raffi, I., Catanzariti, R., Palike, H., Backman, J., Rio, D.: Biozonation and biochronology of Paleogene calcareous nannofossils from low and middle latitudes. Newsl. Stratigr. 47(2), 131–181 (2014)CrossRefGoogle Scholar
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    Persico, D., Villa, G.: Eocene–Oligocene calcareous nan-nofossils from Maud Rise and Kerguelen Plateau (Antarctica): palaeoecological and palaeoceanographic implications. Mar. Micropaleontol. 52, 153–179 (2004)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Jihede Haj Messaoud
    • 1
    • 2
    • 3
    Email author
  • Chokri Yaich
    • 2
    • 3
  • Johannes Monkenbusch
    • 1
  • Nicolas Thibault
    • 1
  1. 1.Department of Geosciences and Natural Resource ManagementUniversity of CopenhagenCopenhagen CDenmark
  2. 2.Sfax National Engineering SchoolUniversity of SfaxSfaxTunisia
  3. 3.Laboratory of Sediment Dynamics and Environment, Sfax National School of EngineersUniversity of SfaxSfaxTunisia

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