论文部分内容阅读
本文论述了康滇地轴东川式层控铜矿床,其层状矿的成矿地质条件主要是矿源层、藻礁与储矿层。成矿作用贯穿在整个沉积过程中,特别是生物造礁作用与成岩作用对成矿具有决定意义。层状铜矿的生成机理可试名为“红层汲取-藻控成岩成矿”模式。由于构造运动及其轻微的变质作用与火山活动,对层状铜矿中的矿质加以改造,沿断裂运移并重新淀积于有利岩层中,形成脉状富矿体或脉型矿床。所以,作为东川式层控铜矿成矿的全过程,又可概括为“红层汲取-藻控成岩成矿-构造富集”模式。
This paper deals with the Dongchuan-type stratabound copper deposit in the Kangdi-Dianxi area. The ore-forming geological conditions of the stratiform mines are mainly source rocks, algae reefs and ore reservoirs. Mineralization throughout the sedimentary process, especially the role of bio-reefs and diagenesis of metallogenic significance. The formation mechanism of stratiform copper deposit can be named as “red layer draw-algal-controlled diagenetic mineralization” mode. Due to the tectonic movement and its minor metamorphism and volcanic activity, the minerals in the layered copper mine are rebuilt and migrate along faults and re-deposited in favorable rock formations to form vein-rich orebodies or vein-type deposits. Therefore, as the whole process of the Dongchuan-type stratabound copper mineralization, they can also be summarized as “red-layer dipping-algae-controlling diagenetic mineralization-tectonic enrichment” mode.