Collaborative Research: Reconstruction of Paleogene Alkenone-Based EP Records

摘要：这项研究的目的是估计从始新世到渐新世大气中二氧化碳浓度的长期变化。这项研究将利用碳氢化合物和碳酸盐微体化石的碳同位素测量以及碳酸盐微体化石的氧同位素测量。测量将在6个离散的时间片上进行，分别代表早、中、晚始新世和早、中、晚渐新世。样品分辨率约为250到500ky。此外，还将在不同的气候事件之前和之后建立记录，例如始新世/渐新世过渡和渐新世末期明显的快速冰川消融。

Summary: This objective of this study is to provide estimates of long-term changes in atmospheric carbon dioxide concentrations from the Eocene through the Oligocene. The study will utilize carbon isotope measurement of alkenones and carbonate microfossils along with oxygen isotope measurements in carbonate microfossils. Measurements will be done on 6 discreet time slices representing the early, middle, and late Eocene and the early, middle and late Oligocene. Sample resolution will be approximately 250 to 500ky. In addition records will be established prior to and following distinct climatic episodes such as the Eocene/Oligocene transition and the apparent rapid deglaciation at the end of the Oligocene.