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本文应用输运反应耦合过程动力学模型研究了安徽铜陵层控夕卡岩型铜矿床的成矿作用动力学机制。研究指出:(1)成矿流体的盐度梯度和流速均可促进岩浆水与地层水的混合和反应,透水层是二者发生强烈混合输运反应与成矿作用的有利场所;(2)在顺层方向上发生等温输运反应时,成矿流体与岩石接触界面处形成的移动输运反应前锋顺透水层从上游向下游缓慢推进,形成了与地层整合的层伏夕卡岩体与层状矿体;(3)在穿层方向上发生穿越等温线的梯度输运反应结果使矿物成分从镁夕卡岩向硫化物矿体发生渐变过渡。
In this paper, the kinetic model of transport reaction coupled process was used to study the metallogenic mechanism of Tongling skarn deposit in Tongling, Anhui Province. The results show that: (1) The salinity gradients and velocity of ore-forming fluids can promote the mixing and reaction of magmatic water and formation water, and the permeable layer is a favorable site for intensive mixed transport and mineralization; (2) When the isothermal transport reaction occurs in the bedding direction, the moving water transport response forward confluence layer formed at the contact interface between the ore-forming fluid and the rock slowly advances from upstream to downstream to form a layer of evanescent volcanic body integrated with the strata (3) Gradient transport reactions that occur across the isothermal line in the direction of stratigraphic transport result in a gradual transition of mineral composition from the magnesium skarn to the sulfide ore body.