| 李涛,杨明,何佳军,李磊,王伟,喻腾.AMT测量在龙首山新水井地区铀矿勘查中的应用[J].矿产勘查,2025,16(S2):89-93 |
| AMT测量在龙首山新水井地区铀矿勘查中的应用 |
| Application of AMT measurement in uranium exploration in the Xinshuijing area of Longshoushan |
| 投稿时间：2025-11-28 |
| DOI：10.20008/j.kckc.2025s2014 |
| 中文关键词: AMT 新水井 铀矿勘查 |
| 英文关键词: AMT Xinshuijing uranium exploration |
| 基金项目:本文受中国核工业地质局铀矿勘查项目(202017-5)资助。 |
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| 摘要点击次数: 23 |
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| 中文摘要: |
| 为查明新水井地区铀矿控矿构造特征，明确断裂构造对铀异常、矿点及矿床的空间控制作用，指导后续找矿勘查与钻探部署，需系统探明区内主要断裂及其次级构造的展布规律。近年来的物探资料验证结果表明，音频大地电磁测量法( AMT)对断裂破碎带、蚀变带等电性变化部位均有较好的显示。因此基于铀矿体严格受东西向压扭性二级构造控制的地质认识，采用音频大地电磁测深法( AMT)对断裂破碎带、蚀变带等电性差异明显部位进行探测，并结合已有钻探资料进行综合解译与验证。实验表明 AMT方法有效揭示了与铀成矿密切相关的马路沟断裂和黄胶泥沟断裂的规模、产状及空间展布特征，初步解译了主断裂附近的次级构造，为钻探查证提供了具体布孔依据。明确了区内铀矿体受东西向压扭性断裂控制的构造格局，为建立断裂构造铀成矿模式提供了关键数据支撑。 |
| 英文摘要: |
| In order to clarify the characteristics of ore-controlling structures in the Xinshuijing area， understand the spatial control of fault structures over uranium anomalies，mineralization occurrences，and deposits，and guide subsequent exploration and drilling deployment，it is essential to systematically investigate thedistribution patterns of major faults and their secondary structures in the area. Recent geophysical data verificationresults indicate that the Audio-frequency Magnetotelluric(AMT)method shows good responses to electrical varia.tion zones such as fault fracture zones and alteration belts. Therefore，based on the geological understanding that uranium ore bodies are strictly controlled by east-west trending compressional-shear secondary structures，the AMT method was employed to detect fault fracture zones and alteration belts with significant electrical differences. Thiswas combined with existing drilling data for comprehensive interpretation and verification. The study demonstratesthat the AMT method effectively revealed the scale，occurrence，and spatial distribution characteristics of the Malugou and Huangjiaonigou faults，which are closely related to uranium mineralization. Secondary structures near the main faults were preliminarily interpreted，providing a concrete basis for drilling verification. The research further confirms that uranium ore bodies in the area are controlled by east-west trending compressional-shear fault structures，offering key data support for establishing a fault-controlled uranium metallogenic model. |
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