本文所研究的流体包裹体体,产于美国内华达州月坑火山区的复式捕虏体中。该捕虏体是一个被中长石-闪石岩脉切割的含闪石的异剥橄榄岩体。采用显微测温术和显微激光喇曼光谱法对该捕虏体这两个组成部分中单个流体包裹体的组成进行了测定。主岩(即异剥橄榄岩)中的流体成分几乎为纯CO_2(>99摩尔％),而岩脉中的流体其CO_2中则含8.5—12摩尔 The fluid inclusions studied in this paper were produced in a double xenolith in the volcano area of ​​Yuekeng, Nevada, USA. The xenolith is a amphibolite-bearing amphibolite rock cut by a feldspar-amphibolite. The composition of individual fluid inclusions in these two components of the xenolith was determined by microscopic thermometry and laser Raman spectroscopy. The fluid composition of the host rock (ie, dextral peridotite) is almost pure CO 2 (> 99 mol%) whereas the fluid in the veins contains 8.5-12 moles of CO 2