A Detailed Model of Cenozoic Sedimentation in the Central North Pacific

在未来两年中，我们计划开发、完善和 测试一个详细的模型的沉积历史的中央 北太平洋。 有了这个模型，我们将能够描述 大量微量元素的海洋地球化学行为， 这些微量元素目前还知之甚少。 模型 将基于详细的数据库，包括所有可用的 活塞的化学、地层、矿物和物理数据 核心LL 44-GPC 3。 本研究与 其他先前的研究远洋粘土序列，是大小和 化学数据库的时间分辨率，包括 分析了代表过去70年的~ 450个样品的39种元素， MA. 这些数据将允许区分更多的沉积物 化学成分的精度更高， 地层分辨率比以往任何研究远洋 粘土。 由此产生的沉积模型将提供一个 详细的，内部一致的，可测试的 构造、气候、海洋和成岩过程， 在过去的70 Ma里影响了北太平洋中部。 我们 我相信，当最终的地球化学模型与 为核心业务提供大量辅助数据 也将使沉积学家在 了解海洋浮游生物化学之间的关系 粘土序列，它们的矿物学，它们的岩石磁性， 和它们的物理特性。

During the next two years we propose to develop, refine and test a detailed model of the sedimentation history of the central North Pacific. With this model we will be able to characterize the marine geochemical behavior of a large number of minor and trace elements which are presently poorly understood. The model will be based on a detailed data base including all available chemical, stratigraphic, mineralogic and physical data for piston core LL44-GPC3. The primary difference between this study and other previous studies of pelagic clay sequences, is the size and temporal resolution of the chemical database which includes analyses of 39 elements of -450 samples representing the last 70 Ma. These data will allow distinction of more sedimentary chemical components with greater precision and much greater stratigraphic resolution than any previous study of pelagic clays. The resulting sedimentation model will provide a detailed, internally consistent, and testable picture of the tectonic, climatic, oceanic, and diagenetic processes which have affected the central North Pacific over the last 70 Ma. We believe that the final geochemical model when combined with the extraordinary amount of ancillary data available for the core will also allow sedimentologists to make a quantum leap in the understanding the relationships between the chemistry of pelagic clay sequences, their mineralogy, their rock magnetic properties, and their physical properties.