Maestrichtian to Cenozoic Calcareous Nannofossil Biogeo- graphy of the South Atlantic Ocean Basin based on New Ocean Drill Sites

基于新大洋钻探点的南大西洋盆地马斯特里赫特阶至新生代钙质超微化石生物地理学

• 批准号: 8917976
• 负责人: Sherwood Wise
• 金额: $ 11.9万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-15 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917976&HistoricalAwards=false
• 关键词: Maestrichtian; Cenozoic; Calcareous; Nannofossil; Biogeo

This award supports the analysis of calcareous nannofossil assemblages from high quality DSDP/ODP drill cores from the South Atlantic to help reconstruct the thermal gradient of surface waters of that basin for the Maestrichtian to Miocene time interval (74 to 5 million years ago). The investigation will characterize major surface water masses and infer from biological gradients latitudinal thermal gradients that can be compared against those derived independently from stable isotope techniques. This should provide new insights into the thermal structure of the oceans through time. Such data have important implications for studies that attempt to reconstruct changes in the global heat budget and the deterioration of Cenozoic climates that accompanied the progressive isolation of the Antarctic continent. The study will record in detail latitudinal shifts in surface water masses through time as a means of tracing steps in the deterioration of global climates. //

该奖项支持了对钙质超微化石的分析 来自南方的高质量DSDP/ODP岩心组合 大西洋帮助重建表面的热梯度 马斯特里赫特阶至中新世时期该盆地的沃茨 时间间隔（7400万至500万年前）。 调查将描述主要地表水体的特征 并从生物梯度推断纬度温度梯度 可以与那些独立于 稳定同位素技术 这应该会提供新的见解 海洋的热结构。 这样的数据 对那些试图 重建全球热量收支的变化， 新生代气候的恶化，伴随着 南极大陆的逐渐孤立。 这项研究将 详细记录地表水团的纬度变化 通过时间作为一种手段，追查步骤，在恶化的 全球气候。 //