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

高分辨率地层盆地至盆地边缘断面土伦纪c-恐龙囊组合的定量评估和古生态意义

基本信息

批准号：
58938635
负责人：
Privatdozent Dr. Frank Wiese
金额：
--
依托单位：
Fachrichtung Paläontologie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/58938635?language=en
关键词：
Quantitative assessment palaeoecologic significance Turonian

项目摘要

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.

统计评估的c-dinocyst组合及其形态特征的潜力尚未全面探讨上白垩纪的继承。虽然从欧洲陆架海的各个部分存在的选择性数据，数据解释遭受几乎整个缺乏高度精确的地层框架，防止比较和关键的古生态/古海洋学评估真正的等值线组合内的膨胀盆地样带。在这个项目中，我们的目标是调查上图隆高频三级序列（约。400 ky）在地层分辨率极限的精确综合地层格架内。遗传相关的沉积物包-个别系统域-和他们的基石，米兰科维奇触发泥灰岩/石灰岩交替，将从盆地边缘（波希米亚）到完全远洋海洋环境（白垩相），代表一个样带约。一千公里。在分类处理之后，将以最高的地层分辨率分析植物群和形态特征，以阐述其空间关系。时间变化将通过统计方法获得。在相控制的背景下，数据将被设置为与环境变化有关。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。