一种获取包裹体内压的新方法——二氧化碳拉曼光谱法

对CO2的拉曼光谱特征做了介绍，特别指出了CO2费米共振峰随温度和压力的变化特点。利用CO2费米共振峰与密度的关系，结合状态方程对山东昌乐一临朐地区的火山岩包裹体进行了研究，获得了该地区火山岩包裹体的现实内压。结果表明，该地区包裹体的现实内压主要集中在5．75—18．29MPa。简单恢复了包裹体的形成深度，经与前人研究成果对比，显示该方法具有一定的可靠性。这种方法可以作为获取合CO2包裹体内压的一种新方法。

A New Method for Measurement of Internal Pressure of Inclusions: CO_2-Raman Spectrometry

The Raman spectroscopic characterization of carbon dioxide has been introduced in this paper with emphasis on the changes of Fermi resonance peaks of CO2 with temperature and pressure. Some volcanic inclusions from Chanle-Linqu district in Shandong province have been studied. Based on the relationship between Fermi resonance and density and state equation, the internal pressure of the inclusions studied have been obtained with values from 5.75 MPa to 18.29 MPa. Although the trapped pressures of inclusions are only computed in a simple way, the results are consistent with those provided by previous authors. It concludes that Raman spectrometry will be a new approach to obtain internal pressure of inclusions in the future.