Quantitative assessment and palaeoecologic significance of Turonian c-dinocysts assemblages in a high-resolution stratigraphic basin to basin margin transect

上白垩统c-dinocyst组合及其形态特征的统计评价潜力尚未得到全面的探讨。尽管存在来自欧洲陆架海不同剖面的选择性数据，但数据解释几乎完全缺乏高度精确的地层格架，这阻碍了对膨胀盆地样带内真正等时组合的比较和关键的古生态/古海洋学评估。在本项目中，我们的目标是在地层分辨率极限的精确综合地层格架内研究上Turonian高频三阶层序（约400 ky）。将从盆地边缘（波希米亚）到完全远洋海洋环境（白垩相）取样与遗传相关的沉积物包（单个系统域）及其构成岩石，即米兰科维奇引发的泥灰岩/灰岩交替，代表约1000公里的样带。在分类处理后，将在最高的地层分辨率下分析花的组合和形态特征，以阐明其空间关系。时间变化将通过统计方法获得。在相控制方面，将把数据与环境变化联系起来。本文将根据中间扰动假说讨论其对古环境重建的可能意义。

The potential of statistical assessment of c-dinocyst assemblages and their morphological traits have not yet been comprehensively explored for Upper Cretaceous successions. Although selective data from various sections of the European shelf sea exist, data interpretation suffers from the almost entire lack of highly precise stratigraphic frameworks, preventing a comparison and critical palaeoecologic/ palaeoceanographic assessment of true isochronous assemblages within a swell-basin transect. In this project, we aim to investigate an Upper Turonian high frequency 3rd order sequence (ca. 400 ky) within a precise integrated stratigraphic framework at the limits of stratigraphic resolution. Genetically related sediment packages – the individual systems tracts – and their building stones, Milankovitch-triggered marl/limestone alternations, will be sampled from the basin margin (Bohemia) into the fully pelagic oceanic setting (Chalk Facies), representing a transect of ca. 1000 km. After taxonomical treatment, floral assemblages and morphological traits will be analysed at the highest stratigraphic resolution in order to elaborate its spatial relations. Temporal changes will be acquired by statistic methods. In context with facies control, data will be set into relation to environmental changes. Its possible significance for palaeoenvironmental reconstructions will be discussed in the light of the intermediate disturbance hypothesis.