Effect of Cold Seepage on Ba and Ra Fluxes and on Chemical Signatures of Barite in the San Clemente Basin
Effect of Cold Seepage on Ba and Ra Fluxes and on Chemical Signatures of Barite in the San Clemente Basin
批准号:
0221160
负责人:
Marta Torres
金额:
$0.0万
依托单位:
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
项目状态:
已结题
起止时间:
2003-06-01 至 2007-11-30
中文摘要
根据这项合同,研究人员将试图量化冷泉重晶石对海洋沉积物记录的贡献。这将首先涉及量化的冷渗漏重晶石(钡的一个重要载体)的贡献,钡和Ra通量内的圣克莱门特盆地。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圣克莱门特盆地保存的沉积物中钡的源和汇及其质量平衡。这项研究将包括一个实地部分,以研究水柱,部署沉积物收集器,并收集岩心样本。实验室部分包括各种各样的元素和同位素技术来表征样品材料。重晶石的稳定性,运输和成岩作用的一般性研究的结果有许多应用到各种相关的问题,并可能导致更好地利用Ba作为生产力的古代理。
英文摘要
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.
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