| 铜陵矿集区中酸性岩体航次3D成像及对深部找矿方向的指示 |
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| 引用本文：严加永,吕庆田,孟贵祥,赵金花.2009.Aeromagnetic 3D inversion imaging for intermediate-acid intrusive bodies and its indication significance of deep ore prospecting in Tongling ore concentration district[J].Mineral Deposits,28(6):838~849 |
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| 基金项目:“十一五”国家科技支撑计划“立体地质填图、流体填图技术与深部成矿预测试验研究”（ 编号：2006BAB01B01）、国家深部探测技术与实验研究专项第三项目“深部矿产资源立体探 测技术与实验研究项目”（编号：Sinoprobe-03） |
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| 中文摘要:铜陵矿集区中酸性侵入岩与成矿关系密切，区内几乎所有的内生金属 矿均与侵入岩有关，岩体周边和深部是主要的找矿方向，发现和圈定隐伏及半隐伏岩体对本 区新一轮深部 找矿工作有着重要意义。本研究以铜陵矿集区1∶5万航磁数据的3D反演成像为基础，结合物 性参数和地质信息，选取适当的磁化率边界，对矿集区岩体的空间分布进行了识别和圈定， 共确定了33个岩体，并对其3D空间形〖JP2〗态进行了定量分析，大部分推测岩体与地表地 质填图所得岩体吻合较好。依据“层位+岩体”的找矿 模式，以航磁反演推测岩体为基础，结合其他成矿信息，确定了本区圈定深部找矿远景区的 6条基本原则，圈定了6个深部找矿远景区， 对铜陵矿集区深部找矿具有重要的指示意义。 |
| 中文关键词:地质学 铜陵矿集区 中酸性岩体 3D反演成像 航磁 深部找矿 |
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| Aeromagnetic 3D inversion imaging for intermediate-acid intrusive bodies and its indication significance of deep ore prospecting in Tongling ore concentration district |
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| Abstract:In the Tongling ore concentration district, the intrusions are closely related t o metallogenic activities and almost all endogenic metallic ore deposits. It is hence of great significance to find and delineate concealed and semi-concealed i ntermediate-acid intrusive bodies in the new round of mineral exploration. The 3 D inversion imaging technique was applied in Tongling based on 1∶50 000 aeromag n etic data in order to detect intermediate-acid intrusive bodies. Based on the in version result, the authors selected a suitable magnetic susceptibility boundary in combination with physical properties of the rocks as well as geological info rmation, identified 34 intermediate_acid intrusive bodies and studied their 3D s patial shapes. Most of the intermediate-acid intrusive bodies are consistent wit h geological mapping results at surface. The inversion results not only reflect the distribution of the intermediate-acid intrusive bodies at surface but also i ndicate their 3D spatial shapes at depth. According to the “horizon + intrusive body" prospecting model in combination with other metallogenic information, 6 pr inciples were established in search for ore prospect areas at depth based on roc k bodies inferred by the aeromagnetic 3D inversion. 6 deep prospecting areas wer e delineated, and the data obtained provide important information for deep prosp ecting in the Tongling ore concentration district. |
| keywords:geology, Tongling ore concentration district, intermediate-acid intrusive body, 3D inversion imaging, aeromagnetic data, deep prospecting |
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