Terrestrial and Extraterrestrial Osmium in Marine Sediments

这项研究的目的是确定在相对恒定的背景水平上，远洋粘土中的外生Os通量的时间和空间变化的幅度。对现代远洋粘土中过量的230-Th和Os的耦合研究将有助于确定北太平洋某一地点今天的Os通量。这项研究将测试Os是否可以用作计算精确沉积速率的示踪剂和地质年代学工具。

Objective of this study is to determine the magnitude of temporal and spatial variations in the flux of ectraterrestrial Osmium in pelagic clays over the reatively constant background levels. Coupled study of excess 230-Th and Os in recent pelagic clays will allow the determination of present day flux of Os in a site in N. Pacific. The study will test if Os can be used as a tracer for calculating precise sedimentation rates and as a geochronologic tool.