Pliocene and Pleistocene Climatic Change in South-Central Colorado

地球表面大陆地区以上的气候历史不如海洋地区以上的气候历史为人所知。沉积的不连续性限制了我们获取大陆气候记录的能力。对过去大陆气候的长期记录尤其罕见。该提案要求支持重建科罗拉多州中南部过去5万年的气候历史。利用130米钻取的岩心样本，pi将利用古磁学和火山灰层来提供岩心的年代控制，并将从孢粉学和古生物学替代指标重建过去的气候。该项目的目标是将该地区观测到的气候变化与海洋沉积物氧同位素组成中记录的气候历史联系起来。这项研究具有重要意义，因为它将把地球历史上新世和更新世时期的海洋和陆地气候记录联系起来。该项目得到了ROW/RIA计划的支持。

The history of climate above the continental regions of the earth's surface is less well-known than above oceanic regions. Discontinuities in sedimentation limit our ability to acquire records of climate on the continents. Long records of past continental climate are particularly rare. This proposal requests support to reconstruct the history of climate for the last 5 Ma in south-central Colorado. Using samples from a 130 meter drill core, the PIs will use paleomagnetics and ash layers to provide chronologic control for the core and will reconstruct past climate from palynological and paleontological proxy indicators. The goal of the project is to correlate the climatic changes observed in this region with the history of climate as it is recorded in the oxygen isotopic composition of marine sediments. This research is important because it will link the marine and terrestrial records of climate from the Pliocene and Pleistocene intervals of earth history. This project is being supported under the ROW/RIA program.