- 责任者：Chen Zhengle (Institute of Geomechinacs ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Yang Nong
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(4)
- 关键词：构造应力场 ; tectonic stress field ; 铀矿 ; uranium ores ; 江西 ; Jiangxi Province
- 页码：p.514-531
- 图表：7 illus., 5 tables, 34 refs.
- 分类号：1001
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
The Xiangshan uranium ore-field is the largest volcanic-related meso-epithermal deposit in China and the uranium-mineralization is tightly controlled by fault activities. This paper mainly presents field measurement results of joints and fault scratches to identify features of tectonic activities and the principal stress direction, using traditional and modern methods in tectonic stress field research. Stages and times of the tectonic stress field are also determined based on successively superimposed deformation relations and diagenesis ages of volcanic rocks. The result showed that the tectonic stress field in the Xiangshan ore field can be divided into three stages and six periods. Characteristics of different phases of tectonic activities and its relationship to the uranium mineralization were additionally discussed, suggesting that the uranium mineralization was consistent with the evolution of the regional tectonic stress field. Favorable structural ore-forming areas for grade-rich ore-bodies in the Xiangshan uranium ore-field were further pointed out.