COLLABORATIVE RESEARCH: An Integrated High-Resolution Study of the Effects of Shifting Climate on Late Paleocene-Early Eocene Continental Ecosystems

以前在大角盆地的研究提供了诱人的证据表明，在古新世/始新世边界和两个早始新世时期的生物变化和气候变化之间的关系，但记录的关键部分的分辨率差，使相关性不确定。利用磁性地层学、物理地层学、古土壤学和哺乳动物群等方法的组合，该项目将开发高分辨率的年代地层学，并为整个盆地的古新统上部-始新世下部剖面的对比以及确定区域事件是否可以与海洋记录相关联提供框架。大角盆地可能是全球最好的地方，在古新世/始新世边界和两个早始新世间隔的沉积物记录气候，哺乳动物区系和植物区系的同时代变化已被保存。拟议的工作是必不可少的未来研究寻求建立生物和气候变化之间的关系，在全球范围内的早期第三纪温室条件的间隔。

AbstractPrevious research in the Bighorn Basin has provided tantalizing evidence suggesting a relationship between biotic change and shifts in climate at the time of the Paleocene/Eocene boundary and two early Eocene time periods, but poor resolution of critical parts of the record renders the correlation inconclusive. Using a combination of approaches -magnetostratigraphy, physical stratigraphy, paleosols, and mammalian faunas- this project will developed a high- resolution chonostratigraphy and provide the framework for correlating upper Paleocene- lower Eocene sections across the basin, and for establishing whether regional event can be correlated with the marine record. The Bighorn Basin is possibly the best localities globally where sediments recording coeval changes in climate, mammalian faunas, and floras at the Paleocene/Eocene boundary and two early Eocene intervals have been preserved. The proposed work is essential for future research seeking to establish the relationship between biotic and climate changes globally during the early Tertiary interval of Greenhouse conditions.