Upper Albian-upper Turonian calcareous nannofossil biostratigraphy and chemostratigraphy in the Vocontian Basin, southeastern France

Babu Ram Gyawali, Hiroshi Nishi, Reishi Takashima, Jens O. Herrle, Hideko Takayanagi, Jean Louis Latil, Yasufumi Iryu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Integrated framework of calcareous nannofossil biostratigraphy and carbon isotope stratigraphy for the upper Albian to upper Turonian succession has been made in the Vocontian Basin, southeastern France. The upper Albian-upper Turonian succession comprising 13 lithostratigraphic units was compiled from five sections (Moriez, Hyèges, Angles, Vergons, and Lambruisse) in the Vocontian Basin based on lithostratigraphic marker beds, biostratigraphy and chemostratigraphy. We recognized 11 calcareous nannofossil zones based on calcareous nannofossil assemblages. Our composite δ13C records and calcareous nannofossil bio - stratigraphy corresponds well with reference curves for upper Cretaceous successions in Europe (English Chalk, Gubbio Section, Italy) and Western Interior Seaway, USA. We clearly identified the Albian-Cenomanian and Cenomanian-Turonian stage boundaries and two black shale intervals representing Oceanic Anoxic Events; OAE1d and OAE2. We also identified both the Mid-Cenomanian Event and the Late Turonian Event. The consistency of our biostratigraphy and carbon isotope curve with global data confirms that integrated nannofossil biostratigraphy and δ13C isotope chemostratigraphy can provide an effective tool for correlation with other upper Albian to upper Turonian successions.

Original languageEnglish
Pages (from-to)111-139
Number of pages29
JournalNewsletters on Stratigraphy
Volume50
Issue number2
DOIs
Publication statusPublished - 2017

Keywords

  • Calcareous nannofossil
  • Carbon isotopic record
  • Hemipelagic sections
  • Integrated stratigraphy
  • Interbasin correlations
  • Mid-Cretaceous
  • Zones

ASJC Scopus subject areas

  • Plant Science
  • Geology
  • Stratigraphy

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