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dc.contributor.authorAtkinson, Jr., Allen Bradleyen_US
dc.description.abstractIn many geologic environments, fluids have compositions that are approximated by the H2O-NaCl system. When minerals grow in the presence of such fluids, some of the solution is trapped in the growing mineral as fluid inclusions. The salinity, temperature of homogenization, and pressure of homogenization are required to predict the trapping conditions of the fluid inclusion. In the laboratory the salinity and the temperature of homogenization of the trapped fluid are easily determined however, the pressure of homogenization cannot be determined directly, and must be calculated from an equation of state.

A statistical model that relates the vapor pressure of H2O-NaCl to the fluid temperature and composition has been developed. The model consists of equations that predict the vapor pressure of H2O-NaCl from the eutectic temperature (-21.2°C) to 1500°C and for all compositions between the pure end-members. The model calculates the vapor pressure based on the composition (wt% NaCl) and the temperature of homogenization, which can be directly obtained from laboratory studies of fluid inclusions. This information in turn can be used to construct the isochore, or line of constant volume, along which the fluid inclusion was trapped. Finally the isochore can be used to determine the temperature and pressure at which the host mineral of the fluid inclusion was trapped.

dc.publisherVirginia Techen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectstatistical regression analysisen_US
dc.subjectvapor pressureen_US
dc.subjectphase equilibriaen_US
dc.subjectfluid inclusionsen_US
dc.titleA Model for the PTX Properties of H2O-NaClen_US
dc.contributor.departmentGeological Sciencesen_US of Scienceen_US Polytechnic Institute and State Universityen_US
dc.contributor.committeechairBodnar, Robert J.en_US
dc.contributor.committeememberCoruh, Cahiten_US
dc.contributor.committeememberAnderson-Cook, Christine M.en_US

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