相图测定成矿压力方法的评述

A REVIEW ON DETERMINATION METHOD OF OREFORMING PRESSURES USING PHASE DIAGRAMS

本文对国内外广泛应用相图测定成矿压力的方法进行了评述。文中讨论了引起相图测定成矿压力不确切性的各种因素,并提出了消除或减弱这些影响因素的措施,以利于进一步提高利用相图进行成矿压力测定的精度。

Phase diagrams have been widely used to determine the pressures of ore formation at present, but this method has some uncertainty as a result of the following factors: 1. uncertainty of determination of trapping temperatures; 2. uncertainty of estimation of salinity and density of inclusion solutions; 3. no consideration of geochemical background of soluble salts in areas being studied; 4. difference in evaluation of pressures of ore formation using phase diagrams constructed by different authors. In order to improve this method some suggestions are presented.