Detailed Modeling of Cenozoic Sedimentation in the North Pacific

Kyte博士（加州大学洛杉矶分校）已获得资金， 联合研究员Leinen博士（URI）在早期研究的基础上 由NSF资助。 先前的工作表明， 不含粘土的远洋粘土可能含有重要的，但往往 忽视了地质和古海洋学信息。 到 迄今为止，作者已经进行了中子活化分析 325个样本，来自于 北太平洋中部 他们开发了一种逆向模型 这项技术将在这个核心中分析的39种元素巧妙地组合在一起， 匹配8个端元沉积物组分。 由此产生的 风成、火山、热液、水成和 对太平洋盆地的生物贡献。 与 目前的奖励，博士Kyte和Leinen将扩展这些分析 和建模技术到另一个长记录（DSDP站点576 在北太平洋西部），并将纳入平行 对各地表层沉积物进行矿物学（XRD）分析 北太平洋 目标是让他们更好地理解 化学和矿物学控制的分布 北太平洋沉积物中的主要、次要+微量元素，以及 继续发展这项技术，作为一种新的方法， 古环境解释

Dr. Kyte (UCLA) has been awarded funds to work with co-investigator Dr. Leinen (URI) to build upon earlier research funded by NSF. This previous work has demonstrated that non-fossiliferous pelagic clays may contain important but often overlooked geologic and paleoceanographic information. To date, the authors have conducted neutron activation analyses on 325 samples spanning 70 Ma of sediment in core LL4-GPC3 from the central N Pacific. They developed an inverse modeling technique that juggles the 39 elements analyzed in this core to match 8 end-member sediment components. From this is emerging a history of eolian, volcanic, hydrothermal, hydrogenous and biologic contribution to the Pacific ocean basin. With the present award, Drs. Kyte and Leinen will extend these analyses and modeling techniques to another long record (DSDP Site 576 in the western N Pacific) and will incorporate parallel mineralogic (XRD) analyses on surface sediments from throughout the N Pacific. The goal is to refine their understanding of the chemical and mineralogical controls on the distribution of major, minor + trace elements in N Pacific sediments, and continue to develop this technique as a new approach in paleoenvironmental interpretation.