丰山矿田接触带构造地球化学障及其成矿作用研究

Tectono-geochemical Obstacles of Contact Zone and their Metallizations in Fengshan Ore Field

构造地球化学障就是在构造地球化学场中元素浓度梯度极大值所在的地质构造地段,其本质是构造地球化学环境发生突变而使元素活动性急剧降低从而发生元素构造地球化学分异和沉淀作用的地质构造地段。接触带构造地球化学障是重要的成矿构造地球化学障。本文运用构造地球化学障成矿理论对丰山矿田的接触—断裂带构造地球化学障、接触—褶皱带构造地球化学障、接触—角砾岩带构造地球化学障、接触带舌状体构造地球化学障及其成矿作用作了系统研究。

Tectono-geochemical obstacle is the geological structure sector which elemental consistency gradient is maxium in tectono-geochemical field. Its essence is the geological structure sector which elemental activity is reduced rapidly because tectono-geo-chemical environment is changed so suddenly that the differentiation and precipitation of elemental tectono- geochemistry, tekc place This paper presents a systematic study of the tectono-geochemical obstacles of contact-fault zone, contact-fold zone contact-breccia zone, and tongue in contact zone, as well as their metallizations in Fengshan ore field, applying the metallogenic theory of tectono-geochemical obstacle.