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

Myriam Boussaha, Nicolas Thibault, Lars Stemmerik

Research output: Chapter in Book/Report/Conference proceedingChapter in bookResearchpeer-review

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.

Original languageEnglish
Title of host publicationSpringer Geology
PublisherSpringer
Pages833-836
Number of pages4
DOIs
Publication statusPublished - 2014

Publication series

NameSpringer Geology
ISSN (Print)2197-9545
ISSN (Electronic)2197-9553

Keywords

  • Calcareous nannofossils
  • Carbon isotope
  • Chalk sediment
  • Danish Basin
  • Late Cretaceous
  • Palaeoenvironments

Programme Area

  • Programme Area 3: Energy Resources

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