铜陵地区硫化物矿床成矿过程的热传导和物质输运动力学

根据热传导和热致流体流动以及化学物质输运动力学原理，模拟和分析了铜陵地区铜金硫化物矿床成矿过程的温度场和流体动场。根据矿区温度空间分布模式和流体流线的展布模式，可以预测矿床的溶解地段和成矿物质的堆积场所。研究表明：（1）能量流和物质流是热液成矿的关键因素，而岩浆侵位带进的热是驱动流体流动的原动力；（2）侵入体的产状、不同化学性质围岩的空间分布的组合方式、围岩的孔隙度和渗透率差异等因素共同限定了成矿物质的沉淀堆积场所；（3）矿区中铁和硫主要来自五通组高孔隙度的含黄铁矿砂岩。在砂岩和灰岩之间的白云岩层强烈碎裂形成有利的成矿空间，白云岩与砂岩之间的化学位差是构成成矿化学反应发生的动力。

Mass and energy transport in ore forming processes of sulfide deposits in Tongling district

Temperature and stream fields of fluid flow in ore forming processes of copper and gold sulfide deposits were modeled and analyzed in the Tongling district based on dynamics theory of heat conduction, fluid flow caused by heating and chemical material transport induced by fluid flow. The results show that mass and energy flow caused by fluid flow is a key factor of hydrothermal ore forming processes; the heating come from magma intruded is base power of driving fluid flow. Occurrence of pluton, spatial combination of wall rocks with different chemical property, and their different porosity and infiltration restrictthe specifically field of precipitation and accumulation for ore forming matter. Therefore, the dissolution and precipitation places for ore forming matterin deposit can be forecasted. Iron and sulfur matter comes mostly from sandstones, which contains pyrite and high porosity. The cataclastic dolomite interlayered in sandstones and limestones is a favorable place for ore accumulating. The difference of chemical potential between sandstone and dolomite forms a favorableinterface for ore forming processes.