Campanian-Maestrichtian Planktonic Foraminiferal Paleoecology and Global Paleoceanography

坎帕尼亚-马斯特里赫期以全球总体降温趋势和浮游有孔虫的演化辐射为特征。浮游有孔虫的长期降温趋势和演化辐射。长期的冷却趋势对纬度温度梯度、海洋水团的形成、深水团和伴随的溶解氧的更新速度和模式产生了影响。这项研究将利用浮游有孔虫：(1)建立统一的寒武纪-马斯特里赫特统生物磁地层学：(2)动物群的定量分析、相对保存的评估和古生态变量的解释；以及(Iii)对相对未改变的细粒、浮游和底栖有孔虫样本进行稳定同位素研究，以推断古温度/古盐度和碳循环的变化。这项研究将集中在约8个重要的DSDP/ODP点，在这些点上，坎帕尼亚-马斯特里赫期将揭示这一区间的古地理趋势。

Campanian and Maestrichtian interval is characterized by a general global cooling trend and an evolutionary radiation of planktonic foraminifera. The long-term cooling trend and an evolutionary radiation of planktonic foraminifera. The long-term cooling trend had an impact on latitudinal thermal gradients, on the formation of oceanic water masses, on rates and patterns of renewal of deep-water masses and attendant dissolved oxygen. This study will use planktonic foraminifera to: (i) construct a uniform integrated biomagnetostratigraphy for the Campanian-Maestrichtian; (ii) quantitative analysis of faunas, assessment of relative preservation and interpretation in terms of paleoecologic variables; and (iii) stable isotopic studies of relatively unaltered fine-fraction, planktonic and benthic foraminiferal samples for inferences about variations in paleotemperature/ paleosalinity and carbon cycling. The study will focus on about 8 important DSDP/ODP Sites in which the Campanian-Maestrichtian to unravel the palesceanographic trends of this interval.