Bio-evolution patterns in a green-house world: Calcareous nannofossils from the Cenomanian-Turonian interval of NW-Europe

我们拟研究5个剖面（Wunstorf、Konrad、Baddeckenstedt、Eastbourne、Goban Spur）的Cenomanian - Turonian的生物地层学、古生态学和古海洋学，并以Wunstorf为重点。这些剖面覆盖了从浅水台地到半远洋黑色页岩到部分含黑色页岩的远洋白垩系的样带。高分辨率稳定同位素曲线（δ18O, δ13C）为各测点的高分辨率对比提供了详细的地层格架。本研究旨在通过对钙质纳米化石的分析和解释，更好地重建不同海洋背景下的古环境和古海洋学，以及非均质沉积信号（黑页岩与白垩）。我们希望了解白垩纪温室世界高峰时期不同海洋环境中钙质纳米化石的演化和辐射模式。我们的项目有以下目标：a)为Wunstorf岩心建立一个高分辨率的生物地层学框架；b)了解不同中纬度地点的古生态和古海洋学；c)根据钙纳米化石生产力来解释黑色页岩和白垩地层；d)破译全球温室世界高峰时期钙纳米化石的演化。

We intend to study the biostratigraphy, palaeoecology and palaeoceanography of the Cenomanian - Turonian of five sections (Wunstorf, Konrad, Baddeckenstedt, Eastbourne, Goban Spur) with the focus on Wunstorf. These sections cover a transect from shallow water platform settings via hemi-pelagic black shales to pelagic chalk successions partly with black shales. High resolution stable isotope curves (δ18O, δ13C) provide a detailed stratigraphic framework for a high resolution correlation of each of these sites. This study aims at a better reconstruction of the paleoenvironment and palaeoceanography of different marine settings and the heterogenous sediment signals (black shale versus chalk) by analysing and interpreting the calcareous nannofossils. We want to understand the evolution and radiation patterns of calcareous nannofossils in different oceanographic environments during the peak of the Cretaceous greenhouse world. Our project has the following goals: a) to develop a high resolution biostratigraphie framework for the Wunstorf core, b) to understand the paleoecology and paleoceanography of different mid-latitudinal sites, c) to interpret both, black shale and chalk formation in the light of calc. nannofossil productivity, d) to decipher the evolution of calc. nannofossils during the peak of the global green house world.