Ore-Controlling Tectonic Analysis and Ore-Prospecting in Shannan Mining Area of Xiangshan Uranium Ore-Field, Jiangxi
详细信息
- 责任者：Chen Zhengle (Institute of Geomechanics ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Wang Pingan
- 刊名：Journal of Earth Sciences and Environment
- 出版年：2013
- 卷期：35(2)
- 关键词：铀矿 ; uranium ores ; 江西 ; Jiangxi Province
- 页码：p.8-18
- 图表：illus., 28 refs.
- 分类号：1001
- issnNo：ISSN1672-6561
- isbnNo：CN61-1423/P
摘要
The uranium ore in Xiangshan of Jiangxi is one of volcanic-related meso-epithermal deposits,and the ore-controlling characteristic of fault structure is significant.Ore-controlling tectonic analysis and tectonic ore-controlling regularity were studied in Shannan mining area of Xiangshan uranium ore-field in order to provide scientific guidance for ore-prospecting in blind ore deposit.Field detailed observation and measurement showed that the main ore-controlling structures in Shannan mining area including NNE-and EW-NWW-trending fault fracture zones had experienced compressional in early stage and later extensional to tran-extensional broken deformation,and therefore were favorable for uranium deposited.The rule of ore-controlling fault was discussed,and it was suggested that the output characteristic of uranium ore-body was mainly controlled by the property of fracture zone.Additionally,the output characteristics ofuranium ore-bodies in various rocks could be interpreted as the different deformation behaviors under tectonic stress,which could be helpful for understanding so-called lithologic ore-controlling.According to the regional ore-prospecting model with characteristic and regular pattern of ore-controlling structure,the preferred favorable sections included the southwest section of Hengjian deposit,joint of Gangshangying,Hengjian and Shimashan deposits,etc.More attention should be paid to high-grade ore-bodies probably in the intersection of NNE-and EW-NWW-trending faults and the sinistral dislocation of ore-body affected by the activity after the metallogenic epoch of NNE-trending fault.