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

以前对比格伦盆地的研究已经提供了诱人的证据，表明在古新世/始新世界线和两个始新世早期时期，生物变化与气候变化之间存在关系，但由于对记录的关键部分分辨率不高，这种相关性是不确定的。利用磁地层学、物理地层学、古土壤和哺乳动物动物群等多种方法的组合，该项目将开发高分辨率的球粒地层学，并为整个盆地上古新世-下始新世剖面的对比提供框架，并确定区域事件是否可以与海洋记录对比。Bighorn盆地可能是全球保存最好的地方，在那里，古新世/始新世界线和两个早期始新世时期的沉积物记录了气候、哺乳动物动物群和植物群的同时代变化。这项拟议的工作对于未来的研究至关重要，这些研究试图确定在早第三纪温室条件间隔期间全球生物和气候变化之间的关系。

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.