Structure of Silicate Melts Determined In-situ at Magmatic Temperatures

在岩浆温度下原位测定硅酸盐熔体的结构

• 批准号: 9218890
• 负责人: Bjorn Mysen
• 金额: $ 5万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218890&HistoricalAwards=false
• 关键词: Structure; Silicate; Melts; Determined; situ

The principal objective of this research project is to quantify the relationships among melt bulk composition, temperature, and structure by using micro-Raman spectroscopy with a high-temperature heating stage. Laboratory experiments will be conducted on alkali and alkaline earth aluminosilicate melts at temperatures up to 1700oC. Results of the experiments will enable identification of the predominant structural units in the melt as a function of bulk composition and temperature, derivation of quantitative estimates of equilibrium constants, and computation of thermodynamic and transport properties. The results will be applied to the study of chemically complex natural magmatic liquids and will ultimately find application in elucidating the behavior of melts within and on the Earth's surface.

本研究项目的主要目的是利用带高温加热阶段的显微拉曼光谱来量化熔体组成、温度和结构之间的关系。实验室实验将在温度高达1700oC的碱性和碱土铝硅酸盐熔体上进行。实验结果将有助于确定熔体中的主要结构单元作为主体组成和温度的函数，推导出平衡常数的定量估计，并计算热力学和输运性质。这些结果将被应用于化学复杂的天然岩浆液体的研究，并最终将在阐明地球表面内部和表面熔体的行为方面得到应用。