中国东南部地幔柱及其与中生代大规模成矿关系初探

MANTLE PLUME AND THE RELATIONSHIP BETWEEN IT AND MESOZOIC LARGE－SCALE METALLOGENESIS IN SOUTHEASTERN CHINA：A PRELIMINARY DISCUSSION

中国东南部是我国的钨锡铜金多金属矿床集中区，燕山期发生大规模成矿作用，研究大规模成矿的地球动力学背景显得尤为重要。本文结合前人的研究资料，初步讨论中国东南部地幔柱及其与中生代大规模成矿关系。通过对中国东南部地幔柱的地质和地球物理方面特征综合分析后，初步探讨了地幔柱构造的岩浆作用和成矿制约。本文认为中国东南部地幔柱不仅可能造成中生代火山─岩浆大爆发，而且可能与中生代大规模成矿有关。

： There are large metallogenic clusters of mineral deposits which include tungsten,tin,copper and gold deposits in southeastern China, and large scale metallic mineralisation took place in the Yanshanian period.It’ s important to study the geodynamic setting of large－scale metallogenesis in southeastern China.After reviewed geological,geochemical and geophysical studies on mantle plume,the article discussed the relation between mantle plume and magmatism and large－scale metallogenesis.We can reach a preliminary conclusion that the mantle plume in southeastern China is not only the heat for the strong Mesozoic volcanic－magmatic explosion,but also probably related to Yanshanian large－scale metallogenesis.The relationship between the deep mantle plume and magmatic activity and Yanshanian large－scale metallogenesis is a subject which need further study in future.