A numerical model to estimate trapping conditions of fluid inclusions that homogenize by halite disappearance
A numerical model to estimate trapping conditions of fluid inclusions that homogenize by halite disappearance
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DOI：
10.1016/j.gca.2012.05.044
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发表时间：
2012-09
影响因子：
5
通讯作者：
P. Lecumberri-Sanchez;M. Steele‐MacInnis;R. Bodnar
中科院分区：
文献类型：
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作者：
P. Lecumberri-Sanchez;M. Steele‐MacInnis;R. Bodnar
流体包裹体（FI），均质化的岩盐消失是常见的，在某些地质环境中，从这些包裹体的显微测温数据的解释一直受到限制，缺乏一个模型描述的PVTX关系在自然界中发现的PTX条件的完整范围。在这项研究中，已经开发了一个系统的方程，可用于估计盐度，压力和密度的FI，均质化的岩盐消失。计算了FI等容线的盐度、压力、密度和dP/dT斜率随液-气均一温度（Th）和岩盐溶解温度（Tm）的变化关系。该方程是基于一个数值模型描述的等容压力-温度轨迹其次是在加热过程中的盐饱和流体。该模型适用于100 ~ 600°C的Th和Tm，适用于沿着液-气-卤曲线的压力~ 300 MPa。
Fluid inclusions (FI) that homogenize by halite disappearance are common in some geological environments, and interpretation of microthermometric data from these inclusions has been limited by the lack of a model describing the PVTX relationships over the complete range of PTX conditions found in nature. In this study, a system of equations has been developed that can be used to estimate salinity, pressure and density of FI that homogenize by halite disappearance. The salinity, pressure, density and dP/dT slope of the FI isochore are calculated as functions of liquid–vapor homogenization temperature (Th) and halite dissolution temperature (Tm). The equations are based on a numerical model describing the isochoric pressure–temperature trajectory followed by halite-saturated fluids during heating. The model is valid for Th and Tm from 100 to 600°C, and for pressures along the liquid–vapor–halite curve to 300MPa.