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STRATI 2013 pp 833-836 | Cite as

Integrated Stratigraphy and Palaeoenvironmental Reconstruction for the Upper Cretaceous Danish Chalk Based on the Stevns-2 Core

  • Myriam BoussahaEmail author
  • Nicolas Thibault
  • Lars Stemmerik
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

An integrated stratigraphy for the Stevns-2 core located in eastern Denmark is presented based on carbon isotope stratigraphy and calcareous nannofossil biostratigraphy. Carbon and oxygen isotope analyses were performed on 419 bulk samples, and 57 samples were analysed for calcareous nannofossil biostratigraphy. Original gamma-ray data from the well-log analysis are also presented. The calcareous nannofossil data span the upper Campanian (UC16a) to the lower Danian (NNT1). These new stratigraphic data are compared with and correlated to other Boreal, Tethyan, and tropical sites to provide an age model for Stevns-2. When using this age model, differences in the sedimentation rates of the Stevns-1 and Stevns-2 boreholes are readily apparent, even though the two sites are located only 8 km from each other. The mechanisms responsible for these variations and differences are under investigation, but are probably related to a combination of variations in palaeoproductivity, palaeocurrents, geodynamics, and palaeotopography.

Keywords

Carbon isotope Chalk sediment Danish Basin Calcareous nannofossils Late Cretaceous Palaeoenvironments 

Notes

Acknowledgments

Funding for this study was provided by Maersk Oil, the Danish Natural Science Research Foundation, and the University of Copenhagen.

References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Myriam Boussaha
    • 1
    Email author
  • Nicolas Thibault
    • 1
  • Lars Stemmerik
    • 2
  1. 1.University of Copenhagen, Department of Geosciences and Natural Resource ManagementCopenhagenDenmark
  2. 2.Natural History Museum of DenmarkCopenhagenDenmark

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