Trace Element and Strontium Isotopic Compositions of Secondary Minerals from Ocean Crust Hydrothermal Reaction Zones: Controls on the Composition of Black Smoker Fluids

洋壳热液反应带次生矿物的微量元素和锶同位素组成：对黑烟流体组成的控制

• 批准号: 9633773
• 负责人: Jeffrey Alt
• 金额: $ 15.17万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-11-15 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633773&HistoricalAwards=false
• 关键词: Trace; Element; Strontium; Isotopic; Compositions

Circulation of seawater through the ocean crust has a major effect on the chemistry of seawater. The composition of the water that exits from hot springs could tell us what processes occur in the ocean crust to form the water. Some processes have been proposed that result in the observed rare earth element, alkali element, calcium, and strontium isotope composition of the exit waters. The hypotheses about potential subsurface reactions can be tested by analyzing the major minerals and their alteration products for trace elements and strontium isotopes. These investigators have new analytical techniques that will allow them to determine trace elements in minerals from rocks recovered from below the sea floor and test the hypotheses.

海水在洋壳中的循环对海水的化学性质有重大影响。 温泉中排出的水的成分可以告诉我们海洋地壳中发生了什么过程来形成水。 已经提出了一些过程，导致观察到的稀土元素，碱金属元素，钙，锶同位素组成的出口沃茨。 通过分析主要矿物及其蚀变产物的微量元素和锶同位素，可以检验关于潜在地下反应的假设。 这些调查人员拥有新的分析技术，将使他们能够确定从海底以下回收的岩石中的矿物中的微量元素，并测试假设。