华南印支期花岗岩与热液型铀矿研究主要进展

Research Progress of Indosinian Granitoids in South China and Hydrothermal-type Uranium Deposits Important

印支期花岗岩在华南有较广的分布,但由于此前多认为其成矿作用较弱,对于成岩及相应的成矿作用研究程度较低。近些年来,由于对华南花岗岩工作程度的逐步加深,印支期花岗岩的成岩成矿作用有了新的认识。根据相关文献的阅读和整理,对印支期花岗岩的成矿特点进行了总结:印支期花岗岩由于当时的受成矿构造背景、自身的岩石地球化学特征、成矿流体和铀的地球化学行为的特殊性这些限制,而不具有明显的直接成矿的能力。此外,印支期花岗岩又起到了初步富集成矿元素的作用。从整体来看,印支期花岗岩的成矿作用应是大规模成矿作用的一个重要的积累时期和演化阶段。

Indosinian granites has a major distribution in south China, but it is thinked that has a weaker mineralization before,and research on diagenesis and mineralization degree are low. In recent years, because of work degree gradually deepening of south China granites, a lot of new understandings about magmatism and mineralization of Indosinian granite have got.According to read and summarize relevant literatures combined with some thing of author, the metallogenic characteristics of Indo-Chinese epoch granite summed up as follows. Because of the tectonic setting about metallogenic, its own rock geochemical characteristics, ore-forming fluid and the geochemical behaviors of uranium, Indo-Chinese epoch granites has no obvious direct mineralization ability. Moreover, the Indo-Chinese epoch granite can also as the uranium source. On the whole,the mineralization of Indosinian granites should be an important accumulation and evolution period of large-scale mineralization.