南岭铀多金属成矿带赣南段构造岩浆演化及富大铀矿成矿条件分析

Analysis on tectonomagmatic evolution and metallogenic geological conditions of rich-large uranium deposits in Nanling uranium-polymetal metallogenic belt, South Jiangxi province

南岭是一条复杂的构造 岩浆活动带 ,也是我国重要的铀多金属成矿带。作者在前人丰硕研究成果的基础上 ,通过地层清理及断代划分 ,岩性、岩相古地理研究 ,岩石的年代学及地球化学研究 ,重磁资料的深层次处理和遥感深层次信息的提取 ,得出了如下认识 :( 1 )三南 寻乌断裂是一条从早震旦至现代长期活动的东西向深断裂带 ;( 2 )南岭地区地壳经历 3次不同规模的南北向开合活动 ;( 3 )安远 寻乌地区为一大型热隆伸展构造 ;( 4)

Nanling is a complicated tectonomagmatic belt. It is also an important uranium polymetallic metallogenic belt. On the basis of the research achievements of previous researchers, through the detailed strati graphyic , lithologic, litho paleogeographic, geochronologic and geochemical studies and the processing of gravimetric and magnetic data, as well as the information extraction of remote sensing data, the authors come to the following conclusions:(1)The Sannan Xunwu fault is a long lived(from the Early Sinian to recent time)EW trending fault;(2)The earth crust in Nanling experienced three time opening closing with different scales;(3)The Anyuan Xunwu area is a large thermo upwelling extensional structure;(4)The above area is considered to be favourable for the formation of rich large uranium deposit.