Iodine Dating Of Pore Waters And Sediments Associated With Gas Hydrates In The Nankai Trough

南海海槽与天然气水合物有关的孔隙水和沉积物的碘测年

• 批准号: 0117664
• 负责人: Udo Fehn
• 金额: $ 5.78万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-11-15 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0117664&HistoricalAwards=false
• 关键词: Iodine; Dating; Pore; Waters; Sediments

Gas hydrates are important as a potential resource, and also because of their possible influence on climate and the global carbon cycle. Their formation is well understood, but their source(s) is not. Pore waters associated with gas hydrates have elevated halogen content, making dating by 129I (AMS) feasible, as has been shown by a pilot study. The idea of this proposal is to date the pore waters and to use their chemistry and that of the sediments to begin to unravel the origin of methane hydrates. Japanese collaborators will provide samples and data relevant to the study. In this proposal, the PI requests support for the sample preparation (Rochester) and AMS dating to be done at Purdue Univ.

天然气水合物是一种重要的潜在资源，也因为它们可能对气候和全球碳循环产生影响。它们的形成很好理解，但它们的来源却不清楚。一项初步研究表明，与天然气水合物相关的孔隙水卤素含量升高，使得129I （AMS）测年成为可能。这个提议的想法是确定孔隙水的年代，并利用它们的化学成分和沉积物的化学成分开始解开甲烷水合物的起源。日本合作者将提供与该研究相关的样本和数据。在该提案中，PI要求支持样品制备（罗切斯特）和AMS定年在普渡大学完成。