Mineralogical and Geochemical Studies of Hydrothermal Precipitates from the Mid-Atlantic Ridge

大西洋中脊热液沉淀物的矿物学和地球化学研究

• 批准号: 8712136
• 负责人: Geoffrey Thompson
• 金额: $ 7.5万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1989-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8712136&HistoricalAwards=false
• 关键词: Mineralogical; Geochemical; Studies; Hydrothermal; Precipitates

This is a proposal to study samples of hydrothermal precipitates that have been obtained from two sites on the Mid- Atlantic Ridge. The samples have ben obtained by dredging, drilling and by submersible operations; and the samples include sulfides, oxides, hydroxides, carbonates, chlorides, and sulfates. The composition and mineralogy of selected samples will be obtained by X-ray diffraction, X-ray fluorescence, microscopy, and photography. Collaborating investigators will perform isotopic and other analyses. The analyses of these samples is important because they come from a site that is approximately 1 kilometer deeper than similar samples from the East Pacific Rise. It is important to understand how different pressure and temperature conditions affect the composition and mineralogy of seafloor hydrothermal precipitates.

这是一项研究从中大西洋海脊两个地点采集的热液沉淀物样本的建议。样品是通过挖泥、钻探和潜水作业获得的，样品包括硫化物、氧化物、氢氧化物、碳酸盐、氯化物和硫酸盐。所选样品的成分和矿物学将通过X射线衍射、X射线荧光、显微镜和摄影获得。合作的调查人员将进行同位素和其他分析。这些样品的分析很重要，因为它们来自一个比东太平洋隆起的类似样品深约1公里的地点。必须了解不同的压力和温度条件如何影响海底热液沉淀物的成分和矿物学。