Environmental Factors Relating to Quaternary Phosphorite Formation on the Peru Shelf

与秘鲁陆架第四纪磷矿形成相关的环境因素

• 批准号: 9214493
• 负责人: William Burnett
• 金额: $ 14.99万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1997-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214493&HistoricalAwards=false
• 关键词: Environmental; Factors; Relating; Quaternary; Phosphorite

The controls on phosphorize formation and mineralization rates will be determined by analysis of the upper several meters of the shelf sediments from cores sampled during ODP leg 112 and several wide-diameter cores to be sampled during two future expeditions. Detailed chronostratigraphic analysis will be obtained by stable isotope analysis of benthonic foraminifera, bulk sediment dating and absolute dating interdispersed authigenic minerals and shell material. These data will allow the PIs to relate the formation and occurrence of phosphorize to environmental parameters over a time scale of hundreds to tens of thousands of years.

对磷化物形成和矿化速率的控制将通过对 ODP 第 112 段期间取样的岩心和未来两次探险期间取样的几个大直径岩心的陆架沉积物上部几米进行分析来确定。 详细的年代地层分析将通过底栖有孔虫的稳定同位素分析、散装沉积物测年和分散自生矿物和贝壳材料的绝对测年来获得。这些数据将使 PI 能够将数百至数万年时间范围内磷化物的形成和出现与环境参数联系起来。