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本文指出:前寒武纪条带状铁硅建造存在一个连续系列;该系列以苏必利尔湖型作为代表沉积作用为主的为一端,以阿尔戈马型作为代表火山作用为主的为另一端,二者之间存在着过渡类型。本文总结了惠民式铁硅建造五个方面的特征:含矿的火山——沉积旋迥结构;火山岩特征及其成矿控制作用;矿石物质组成与沉积相;条带状构造和生物作用证据。探讨了它在滇西早期大地构造旋迥中的时空位置;並将其与苏必利尔湖型和阿尔戈马型进行对比。结果表明,惠民式铁硅建造在沉积作用方面与前者相似,而在火山作用方面又与后者相当。看来,火山和沉积两种作用在形成惠民式含铁建造中具有统一性,属连续系列中的过渡类型性质。
This paper points out that there is a continuous series of Precambrian banded iron-silicon construction. This series is based on the Lake Superior Lake sedimentary facies, with the Algoma as the representative volcano and the other end There is a transitional type between the two. This paper summarizes the characteristics of the Huimin-style iron-silicon construction in five aspects: the volcanic-sedimentary rotation structure of the ore-bearing volcano; the volcanic rock characteristics and its metallogenic control; the composition and sedimentary facies of ores; the evidence of banded structure and biological function . The temporal and spatial location of the lake in the early tectonic cycle of western Yunnan was discussed and compared with Lake Superior and the Algoma. The results show that the Huimin-style iron-silicon construction is similar to the former in sedimentation and comparable to the latter in volcanism. It appears that both the volcanic and sedimentary effects are of a uniform nature in the formation of the Huimin-style iron-bearing construction and are of a transitional type in a continuous series.