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.

根据这一奖项，私人投资者将试图量化冷渗水重晶石对海洋沉积物记录的贡献。这将首先涉及量化冷渗重晶石(巴的重要载体)对圣克莱门特盆地内巴和Ra通量的贡献。其次，PI将量化这一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圣克莱门特盆地保存下来的沉积物中巴的来源和汇，以及它的质量平衡。这项研究将包括一个实地部分，以研究水柱，部署沉积物捕集器，并收集岩心样本。实验室部分由非常广泛的元素和同位素技术组成，用于表征样品材料。重晶石的稳定性、输运和成岩作用的综合研究结果在各种相关问题上有许多应用，并可能导致更好地利用Ba作为古生产力的代用品。