Determination of inner pressure for fluid inclusions by Raman spectroscopy and its application  

作　　者：Haifei Zheng Erwei Qiao Yuping Yang Tiyu Duan 

机构地区：[1]Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China

出　　处：《Geoscience Frontiers》2011年第3期403-407,共5页地学前缘（英文版）

基　　金：supported by Chinese Natural Science Foundation (No.40873047)

摘　　要：Using a Diamond Anvil Cell combined with micro Raman spectroscopy, the quantitative relations among Raman shifts, pressure and temperature were obtained for the vibration of O-H in H2O-NaCl, C-O in CO3^2-, S-O in SO4^2- and C-H in n-heptane-cyclohexane. Based on the quantitative relationships obtained, it is possible to determine the inner pressure for single fluid inclusions and to further determine the isochore of the systems. It is not only helpful to obtain the forming temperatures and pressures of the enclosing minerals, but also to be able to provide information concerning the chemical compositions of the fluid inclusions.Using a Diamond Anvil Cell combined with micro Raman spectroscopy, the quantitative relations among Raman shifts, pressure and temperature were obtained for the vibration of O-H in H2O-NaCl, C-O in CO3^2-, S-O in SO4^2- and C-H in n-heptane-cyclohexane. Based on the quantitative relationships obtained, it is possible to determine the inner pressure for single fluid inclusions and to further determine the isochore of the systems. It is not only helpful to obtain the forming temperatures and pressures of the enclosing minerals, but also to be able to provide information concerning the chemical compositions of the fluid inclusions.

关 键 词：Raman spectroscopy Fluid inclusion Inner pressure Isochore line Forming temperature andpressure of minerals 

分 类 号：TQ116.3[化学工程—无机化工] P618.13[天文地球—矿床学]