ROW: An Integrated Petrographic, Chemical and Isotopic Study of the Diagenesis of Carbonate Sediments in the Deep Sea

ROW：深海碳酸盐沉积物成岩作用的综合岩相学、化学和同位素研究

• 批准号: 8800049
• 负责人: Enriqueta Barrera
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-15 至 1990-08-21
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8800049&HistoricalAwards=false
• 关键词: ROW; Integrated; Petrographic; Chemical; Isotopic

This project involves an investigation of the nature and mechanisms of the diagenesis of carbonate sediment in cores recovered by the Deep Sea Drilling Project. The goal is to use petrographic, chemical, and isotopic techniques to determine the degree of modification by diagenesis on the isotopic signature of foraminifera from DSDP and ODP drill cores. Those isotopic signatures are used to reconstruct the paleoenvironmental conditions at the time of deposition at the site and may also include an overprint from the subsequent diagenesis. Recognition of samples with this overprint will allow paleoceanographers to reject samples which do not retain an environmental signal so that reconstructions of paleoclimates recorded in drill cores will not be in error.

该项目涉及对深海钻探项目回收的岩心中碳酸盐沉积物成岩作用的性质和机制的调查。其目标是使用岩石学、化学和同位素技术来确定成岩作用对来自DSDP和ODP型钻芯的有孔虫的同位素特征的改造程度。这些同位素特征被用来重建该地点沉积时的古环境条件，还可能包括随后成岩作用的叠加。识别具有这种叠印的样本将允许古海洋学家拒绝不保留环境信号的样本，以便在钻探岩芯中记录的古气候重建不会出错。