| 安徽五河金矿整装勘查的重要发现及其地质意义 |
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| 作者姓名： | 汪青松 张家嘉 张顺林 朱义坤 张金会 郝树曦 |
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| 作者单位： | 安徽省勘查技术院,合肥 230031 |
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| 基金项目： | 安徽省地质勘查基金“五河县荣渡—小溪集金及多金属矿整装勘查(编号: 2010-2-34)”项目资助 |
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| 摘 要： | 为实现覆盖区找矿新突破,通过建立适合郯庐断裂体系的继承性断裂控矿模式和覆盖区综合找矿模式,开展识别覆盖区薄层良导体的方法实验,研究安徽五河金矿整装勘查区的成矿及控矿规律。结果表明: NNE—NE向断裂是五河金矿整装勘查区的主要控矿构造,矿体空间展布与磁异常形态具有较好的对应性。结合覆盖区“一选三定四阶段反复循环”的综合找矿模式及低频磁电勘探法、地-井充电法和正反向电位法等找矿新方法,该区取得了较好的找矿效果。利用磁异常梯级带可寻找郯庐断裂带次级断裂,即控矿断裂,利用上述3种找矿新方法可准确圈定矿体位置,最终在五河金矿整装勘查区新发现了2处金多金属矿产地。以上控矿、综合找矿模式及找矿新方法对郯庐断裂体系及覆盖区找矿具有指导意义。
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| 关 键 词： | 郯庐断裂带 五河整装勘查区 控矿模式 覆盖区 |
| 收稿时间： | 2018-09-29 |
Important discoveries in Wuhe integrated exploration gold mine area in Anhui Province and its geological significance |
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| Authors: | WANG Qingsong ZHANG Jiajia ZHANG Shunlin ZHU Yikun ZHANG Jinhui HAO Shuxi |
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| Institution: | Geological Exploration Technology Institute of Anhui Province, Hefei 230031, China |
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| Abstract: | In order to make a new breakthrough in the prospecting of the coverage area, a suitable inherited fracture-controlling model for Tan-Lu fault system and a comprehensive prospecting model for the coverage area were established. Then an experimental method for identifying thin conductors in the coverage area was carried out to study Wuhe integrated exploration area mineralization and ore-controlling regularity. The results show that the NNE-NE fault is the main ore-controlling structure of Wuhe integrated exploration area. The spatial distribution pattern of the ore body has a good correspondence with the magnetic anomaly pattern. Combined with the ‘repeated circulation of one selection, three confirmation, four stages’ comprehensive prospecting model, the low-frequency electrical magnetic exploration method, the ground-well charging method and the positive and negative potential method in the coverage area, better prospecting results were achieved in this area. The magnetic anomaly step belt is used to find the secondary fault of Tan-Lu fault zone, which is also the ore-controlling fault. These three prospecting methods mentioned above can be used accurately to locate the ore body, and finally two gold polymetallic mineral deposits were found in Wuhe integrated exploration area. It indicates that these ore-controlling, comprehensive prospecting models and new prospecting methods have some guiding significance on prospecting in Tan-Lu fault system and the coverage area. |
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| Keywords: | Tan-Lu fault zone Wuhe integrated exploration area ore-controlling mode coverage area |
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