Experimental Examination, In-Situ, of H2O-Bearing Magmatic Systems at Pressure and Temperature Conditions of the Earth's Crust and Upper Mantle

地壳和上地幔压力和温度条件下含水岩浆系统的现场实验检查

• 批准号: 9614423
• 负责人: Bjorn Mysen
• 金额: $ 3.94万
• 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: 1997
• 资助国家: 美国
• 起止时间: 1997-03-01 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614423&HistoricalAwards=false
• 关键词: Experimental; Examination; Situ; H2O; Bearing

9614423 Mysen The principal objective of the proposed research is to investigate in-situ at high temperature and pressure (crustal and upper mantle conditions) the chemical structure of hydrous silicate melts and associated hydrothermal fluids as a function of temperature, composition, and pressure. This pilot project will focus on a systematic study of water-saturated potassium silicate melts and coexisting aqueous fluids. The project will involve complementary studies including (1) in-situ Raman spectroscopic measurements of both the melt and aqueous phase, and (2) phase equilibrium experiments and necessary analytical examination to determine the exact compositions of the two phases. Spectroscopic studies will be performed using externally- heated diamond-anvil cells which are capable of being used to temperatures of 1000oC and pressures in excess of 2.5 Gpa.

9614423 Mysen拟议研究的主要目标是在高温和高压(地壳和上地幔条件)下原位调查水合硅酸盐熔体和相关的热液流体的化学结构随温度、成分和压力的变化。这一试点项目将重点对水饱和的硅酸钾熔体和共存的含水流体进行系统研究。该项目将涉及补充性研究，包括(1)熔体和水相的原位拉曼光谱测量，以及(2)相平衡实验和必要的分析检查，以确定两相的确切组成。光谱学研究将使用外部加热的钻石顶压室，它能够用于1000摄氏度的温度和超过2.5 Gpa的压力。