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

本研究的重点是获取和解释非海相沉积物中至晚更新世的古气候和古磁场记录，以确定大而快速的气候变化对非海相系统的影响。沉积物的整体地层学和年代学将采用多学科方法建立，包括详细的岩性描述、温度年代学、辐射年龄测定和古地磁对比。古气候将从介形虫区系分析、花粉花分析和介形虫壳的地球化学分析中推断出来。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古地磁变化的高分辨率“类型剖面”。

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.