Abstract The Upper Cretaceous Postalm section in the Northern Calcareous Alps (Austria) exposes pelagic deposits of the northwestern Tethys whose cyclostratigraphy and palaeoenvironments were examined in this study. The section displays rhythmic deposits of Santonian to late Campanian age (Gosau Group). The Santonian/Campanian transition is characterised by condensed greyish carbonates, while the younger deposits are composed of reddish foraminiferal packstones displaying distinct limestone-marl alternations. A biostratigraphic framework based on planktonic foraminifera and calcareous nannofossils is supported by carbon and strontium isotope stratigraphy as well as magnetostratigraphy. The carbon isotope data allow to correlate the Postalm section to other Tethyan reference sites and to identify δ13C events, such as the Late Campanian Event. Spectral analyses of three independently assessed proxies (δ13C, Fe content and the thickness of limestone/marl couplets) in the upper, continuously exposed section part identified 17 to 18 405 ka cycles spanning the mid to upper Campanian (Contusotruncana plummerae to Gansserina gansseri Zones or CC21/UC15c to CC23a/UC16 nannofossil zones).

中文翻译：

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对特提斯西北部循环远洋沉积物的综合多代理研究：邮政部分的坎帕尼亚（Gosau Group，奥地利）

摘要 北钙质阿尔卑斯山（奥地利）的上白垩统 Postalm 剖面暴露了特提斯西北部的远洋沉积物，本研究对其旋回地层和古环境进行了研究。该部分显示了桑托阶到晚坎帕阶（Gosau Group）的有节奏的沉积物。Santonian/Campanian 过渡以凝聚的灰色碳酸盐岩为特征，而较年轻的矿床由红色的有孔虫灰岩组成，显示出明显的石灰岩-泥灰岩交替。基于浮游有孔虫和钙质纳米化石的生物地层框架得到碳和锶同位素地层学以及磁地层学的支持。碳同位素数据允许将 Postalm 剖面与其他特提斯参考地点相关联，并确定 δ13C 事件，例如晚坎帕阶事件。