摘要
测定包裹体中的水含量是直接确定岩浆中水含量的唯一手段。本文在对Naumov B.的计算模式进行原则性修正的基础上建立了新的计算模式:C_(H_2O)=F(nV_L-kV_G)/[F(nV_L-kV_G)+2.7(V_M-nV_L)]其中V_G,V_L,V_M分别代表气泡,流体及包裹体的体积,n,k为不同状态下包裹体积的比例系数,F为充填度。如果在室温(20℃)下能分辩出白云母晶体,那么对融熔包裹体中水含量的计算模式应作相应调整如下:其中V_0代表白云母的体积。
It is the only direct way to know.water content in magma by measurc C_(H_2O) in melt inclusion (MI). This study give a new way to determine C_(H_2O) in MI by the following formula:In any case if in MI exist crystal muscovite, the C_(H_2O) should be calculated by another formula as following : Where V_0 represent the volume of muscovite, V_L-the volume of liquid phase, V_G-the volume of gas phase, V_M-the volume of melt inclusion.n-represcnt the volume ratio of MI from home temperature to homogeneous temperature, k-the volume ratio of MI from Liquid-homogeneous temperature to homogeneous temperature.
