中国西部周边邻区构造—火山—成矿建造特征及时空分布规律

CHARACTERISTICS AND THE TIME-SPACE DISTRIBUTION REGULARITY OF THE TECTONO-VOLCANO-METALLO-GENETIC FORMATION IN REGIONS CONTIGUOUS TO THE WEST OF CHINA

概述了我国西部周边毗邻地区主要褶皱系及该区的火山-成矿建造特征、演化趋势和时空分布规律。指出该区与火山活动有关金属矿产是丰富的,主要有铜、铅、锌、铁、金、钼和铀等。成矿时代有7个,主要分布于前苏联的哈萨克斯坦-天山、中阿富汗-巴基斯坦和中、北印度地区。该区构造-火山-成矿建造的演化趋势与时空分布规律表现了从晚前寒武纪至新生代、从西伯利亚克拉通南缘至阿拉伯海北海岸的3个有序演化。在对比我国有关地区的地质成矿条件之后,提出了我国有关地区的一些找矿远景地区。

This paper generally described the chracteristics, evolutionary tendency and time-space distribution regularity of the tectono-volcano-metallogenetic formation, in the regions contiguous to the West of China. It is pointed out that metal mineral resources associated with volcanism in the regions are aboundant, mainly Cu, Pb, Zn, Fe, Au, Mo, and U. There exist seven metollogenic epoches. The major orefields are distributed in the Hazakstan-Tianshan area in S.U.U.R., the middle Afghanstan-Bakistan area, and the middle and north India area. The evolutionary tendency and time-space distribution regularity of metal mineralization represents three ordered evolutionary systems from late Precambrian to Neozoic in age and from the south border of Sibria craton to the north coast of Arabian in space. The author, therefore, sets out the certain promising prospect areas which are at this side of China, opposite to the neighbouring metallogenetic provinces being mentioned above.