Effect of Cold Seepage on Ba and Ra Fluxes and on Chemical Signatures of Barite in the San Clemente Basin

冷渗流对圣克莱门特盆地 Ba 和 Ra 通量以及重晶石化学特征的影响

• 批准号: 0221160
• 负责人: Marta Torres
• 金额: --
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0221160&HistoricalAwards=false
• 关键词: Effect; Cold; Seepage; Ba; Ra

Under this award, the PIs will attempt to quantify the cold seep barite contribution to the marine sediment record. This will first involve quantifying the cold seep barite (an important carrier of Ba ) contribution to Ba and Ra fluxes within the San Clemente basin. Secondly, the PIs will quantify the effects of this source on the chemical signature of barite in the basin sediments. In general, the idea is to better understand the sources and sinks of Ba and its mass balance in preserved sediments in the San Clemente basin. The study will involve a field component to study the water column, deploy sediment traps, and collect core samples. The laboratory component consists of a very wide variety of elemental and isotopic techniques to characterize sample materials. The results of this general study of the stability, transport and diagenesis of barite has numerous applications to a variety of related questions, and may result in better use of Ba as a paleoproxy of productivity.

根据该奖项，PI 将尝试量化冷泉重晶石对海洋沉积物记录的贡献。这首先涉及量化冷泉重晶石（Ba 的重要载体）对圣克莱门特盆地内 Ba 和 Ra 通量的贡献。其次，PI 将量化该来源对盆地沉积物中重晶石化学特征的影响。总的来说，这个想法是为了更好地了解Ba的来源和汇及其在圣克莱门特盆地保存的沉积物中的质量平衡。该研究将涉及现场研究水柱、部署沉积物捕集器和收集岩心样本。实验室部分由各种各样的元素和同位素技术组成，用于表征样品材料。这项关于重晶石稳定性、输运和成岩作用的一般研究结果对各种相关问题有广泛的应用，并可能导致更好地利用Ba作为生产力的古代表。