(ESH) Collaborative Research: Pliocene and Early PleistoceneContinental Paleoclimate Records from the Eastern Great Basin, Utah -- UC Davis Component

小行星9510083 上新世中期至更新世早期是全球气候变化的重要时期。 在美国大陆，这一时期很少有长期和连续的非海洋气候变化记录，存在的记录来自大盆地的遥远西部，那里的海洋气候过程预计会对记录产生重大影响。 主要调查人员从大盆地东部最近钻探的两个湖相沉积物岩心中获得了新的数据。 初步数据表明，这些岩心代表了重要的古气候地质记录（从0.75 Ma到约3.1 Ma），这将为确定海洋和大陆气候过程之间的关系和耦合程度提供急需的数据。 本研究的目标是获得环境磁性，岩石地层学和沉积学数据，从这两个核心，以破译古气候变化的历史，在这一部分的大盆地。 上新世和更新世气候事件的时间、时间变化和规模的详细记录将提供有关大陆气候变化的基本重要数据。 建议将这些数据与其他不太详细的大盆地记录以及海洋古气候记录进行比较。 这将有助于限制陆地-海洋相互作用模型和全球环境变化模型。 该项目是多学科和多机构的，将与美国地质调查局和犹他州大学的同事密切合作进行。

9510083 Roberts The middle Pliocene to early Pleistocene was a period of major global climate change. Few long and continuous of records of non-marine climate changes have been reported from this period in the continental United States, and those that exist are from the far west of the Great Basin where marine climate processes would be expected to significantly affect the records. New data have been obtained by the Principal Investigators from two recently drilled lacustrine sediment cores in the eastern Great Basin. Preliminary data suggest that these cores represent important geological records of paleoclimate (from 0.75 Ma to about 3.1 Ma) which will provide much-needed data to determine the relationship, and degree of coupling, between marine and continental climate processes. The goals of this study are to acquire environmental magnetic, lithostratigraphic, and sedimentologic data from these two cores in order to decipher the history of paleoclimate variations in this part of the Great Basin. Detailed documentation of the timing, temporal variation, and magnitude of Pliocene and Pleistocene climatic events will provide fundamentally important data concerning continental climate change. It is proposed to compare the data with other, less detailed, records from the Great Basin as well as marine paleoclimate records. This will help to constrain models of land-ocean interaction and models of global environmental change. The project is multidisciplinary and multi-institutional and will be carried out in close collaboration with colleagues from the U.S. Geological Survey and the University of Utah.