| 李俊,江卫兵,李海东.粤北竹筒尖矿床F3号断裂带地质特征与铀成矿关系[J].矿产勘查,2022,13(6):747-758 |
| 粤北竹筒尖矿床F3号断裂带地质特征与铀成矿关系 |
| Geological characteristics of F3 fault of Zhutongjian deposit in northern Guangdong and its relationship with uranium mineralization |
| 投稿时间：2021-07-15 |
| DOI：10.20008/j.kckc.202206005 |
| 中文关键词: 竹筒尖矿床 断裂构造 地质特征 铀成矿 |
| 英文关键词: Zhutongjian deposit fauit structure geological characteristics uranium mineralization |
| 基金项目:本文受中国核工业地质局铀矿地质勘查项目“广东省下庄矿集区铀矿资源调查评价与勘查”(201926)、中国铀业有限公司-东华理工大学核资源与环境国家重点实验室联合创新基金项目“粤北下庄铀矿田成矿构造空间研究及找矿预测”(NRE2021-01)联合资助。 |
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| 中文摘要: |
| 竹筒尖矿床是我国华南地区典型的花岗岩型铀矿床。矿床位于下庄矿田西北部,铀矿化严格受断裂构造控制,研究断裂构造地质特征与铀成矿关系对区内找矿工作具有重要意义。本文主要对F3号断裂带构造空间展布特征、构造力学性质、构造物质组成、构造蚀变特征等方面进行综合研究,分析探讨了F3号断裂带与铀成矿的关系及该地区下一步找矿方向。结果表明F3号断裂带具有早期压扭、成矿期张扭性的多期次活动特征,为铀成矿物质提供运移通道和沉淀场所。在构造分支复合、膨胀收缩、弯曲变形以及构造与不同岩性接触界面的复合部位是成矿的有利部位,该地区钻探揭露成果显示在龟尾山断裂构造、岩体、热液蚀变的“三位一体”部位为下一步找矿方向。 |
| 英文摘要: |
| The Zhutongjian deposit is a typical granite-type uranium deposit in south China. The deposit is located in the northwest of the Xiazhuang ore field, and uranium mineralization is strictly controlled by fault structures. Studying the relationship between the geological characteristics of fault structures and uranium mineralization is of great significance to the prospecting work in the erea. This paper mainly conducts comprehensive research on the characteristics of structural space distribution, structural mechanical properties, structural material composition, and structural alteration characteristics of F3 zone. On this basis, further analyses and discusses the relationship between the F3 zone and uranium mineralization. Analyze the future prospecting direction of the Zhutongjian area. The results show that F3 zone has the characteristics of multi-stage activity, which is characterized by early compression and torsion, and tension and torsion during mineralization, it provides migration channel and precipitation site for uranium ore-forming materials. It is a favorable location for mineralization in the complex parts of structural branching, expansion and contraction, bending deformation, and structural contact with different lithologies. Combining with the results of drilling in the area, the “trinity” of Guiweishan fault structure, rock mass, and hydrothermal alteration is the next prospecting direction. |
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