摘要
在多孔介质岩石中形成的热液蚀变矿物分带并不是完全受制约水－岩反应的物理化学条件控制。主要控制因素是蚀变反应前锋传播速度差异，蚀变反应前锋传播速度受物质输运－化学反应耦合作用动力学因素制约，表现在水－岩反应中水相物种的计量系数和蚀变岩石孔隙度。
The zoning of hydrothermal altered minerals formed in porous rocks is not completelycontrolled by the physicochemical conditions limiting water-rock reactions，Geochemical ki-netic studies show that the main cause is the different propagating velocity of alteration reac-tion frontiers. The coupled mass transportchemical reaction processes affect the propagatingvelocity of altered reaction frontier througli the different stoichiometric coefficient of solutionspecies in water－rock reactions and the final porosity of altered rocks.
基金
国家自然科学基金
关键词
热液
孔隙度
物质输运
水-岩反应
化学反应
hydrothermal solution；porosity；altered mineral zoning；coupled mass transport-chemical reaction
