COLLABORATIVE RESEARCH: RUI: High-Resolution Paleoclimate and Paleomagnetic Records from the Middle to Late Pleistocene, Nonmarine Sediments in South-Central Oregon

这项研究的主要目的是获取和解释中、晚更新世陆相沉积物的古气候和古地磁场记录，以确定大规模快速气候变化对陆相系统的影响。将使用多学科方法建立沉积物的总体地层和年代学，包括详细的岩性描述、年代学、放射性年龄测定和古地磁对比。通过介形类动物群分析、花粉区系分析和介形类贝壳的地球化学分析，可以推断古气候。古地磁工作将a)建立地磁漂移与长期变化之间的因果关系，b)建立北美西部更新世高分辨率的“类型剖面”古地磁变化。

The main focus of this study is to acquire and interpret a middle to late Pleistocene record of paleoclimate and the paleomagnetic field from nonmarine sediments in an effort to determine the effect of large and rapid climate changes on nonmarine systems. The overall stratigraphy and chronology of the sediments will be established using a multidisciplinary approach including detailed lithologic descriptions, tephrochronology, radiometric age dating, and paleomagnetic correlations. Paleoclimate will be inferred from ostracod faunal analyses, pollen floral analyses, and the geochemical analysis of ostracod shells. The paleomagnetic work will a) established a causal relationship between geomagnetic excursions and secular variations and b) established a high resolution "type section" paleomagnetic variations for the Pleistocene of western North America.