湘东丫江桥岩体西接触带铀多金属矿成矿地质条件及找矿-湖南理工学院.PDF

第 28 卷 第 2 期 湖南理工学院学报( 自然科学版) Vol.28 No.2 2015 年 6 月 Journal of Hunan Institute of Science and Technology (Natural Sciences) Jun. 2015 湘东丫江桥岩体西接触带铀多金属矿 成矿地质条件及找矿前景探讨 熊作胜, 刘 旭, 何春明, 黄中元, 黄绍琼 (湖南省核工业地质局 三零六大队, 湖南 衡阳 421008) 摘 要: 通过对铀多金属矿成矿地质条件的探讨, 总结了铀成矿基本规律, 包括时控规律、空间分布规律、铀矿化类型 及特征和控矿因素. 其中强调指出, 本区构造、地层和岩浆岩接触带三位一体联合控矿, 而断裂构造作用是关键因素. 在 此基础上, 进一步分析了找矿前景及找矿方向. 关键词: 铀多金属矿化; 成矿地质条件; 成矿规律; 矿化类型; 找矿方向; 找矿前景 中图分类号: P619.14 文献标识码: A 文章编号: 1672-5298(2015)02-0074-07 Metallogenic Xiangdong Ya Jiangqiao Rock Uranium Polymetallic Ore and Discussion on the Geological Conditions and Prospecting Potential XIONG Zuo-sheng, LIU Xu, HE Chun-ming, HUANG Zhong-yuan, HUANG Shao-qiong (Geological Bureau of Hunan Province Nuclear Industry Brigade 306, Hengyang 421008, China) Abstract: This paper discusses the ore-forming geological conditions of uranium polymetallic ore, summarizes the basic rules of uranium metallogenesis, control rules, including the time space distribution, type and characteristics of uranium mineralization and ore controlling factors. It indicated that, the tectonic, stratum and magmatite belt joint contact three-in-one ore controlling, and the fracture tectonic action is the key factor. On this basis, further analyzes the prospecting and prospecting direction. Key words: uranium polymetallic mineralization; the metallogenic geological conditions; metallogenic regularity; the mineralization type; prospecting direction; prospecting potential 1 区域地质背景 该区位于华南褶皱系湘桂粤褶皱带东北部, 江南台隆东南缘湘东断隆带内, 川口— 明月峰隆起带北 段, 丫江桥复式岩体西接触带(图 1). 基底冷家溪群为一套深海—半深海相具复理式韵律特征的板岩、岩 屑杂砂岩、凝灰质砂岩、浊积岩等