| 基于地质与重磁数据集成的河北迁安铁矿集区三维成矿预测 |
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| 关键词:geology gravity and magnetic data geological modeling 3D metallogenic prediction iron ore Qian’an |
| 基金项目:中国地质科学院基本科研业务费项目“基于三维地质建模的矿产资源预测评价——以迁安矿集区为例”(编号: J1721);中国地质调查局项目“冀东铁矿矿集区三维地质结构与深部资源评价”(编号: 12120114026901);“内蒙东南部地区三维地质调查应用示范”(编号: DD20160125) |
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| 摘要点击次数: 1900 |
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| 摘要: |
| 3D Metallogenic Prediction Based on Geological and Gravity-magnetic Data Integration in the Qian’an Iron Ore Concentration Area, Hebei Province |
| The Qian’an iron ore concentration area is a typical Precambrian BIF enrichment area and also an important raw material base for iron ore. In recent years, the proven reserves have been declining continuously, so it is urgent to carry out deep iron resources prospecting work. 3D geological modeling based on geological and gravity-magnetic data integration, under the guidance of geological theory, is an important method and frontier of mineral resources exploration and assessment in the world. The Qian’an iron ore concentration area was taken as the study area. Based on geological and gravity-magnetic interpretation data, the authors established 3D geological model of Qian’an geological map (1:50 000) and then, guided by regional metallogenic theory and prospecting model, the authors summed up some favorable geological conditions for ore control, and established the quantitative prediction model. By using “cubic predicting model” prospecting method, the authors delineated 5 predicted targets according to the value of prospecting information. The research results show that the gravity and magnetic anomalies can effectively infer fault structures and iron-bearing formations distribution in the ore-concentrating area, which provides support for regional 3D geological modeling. Meanwhile, this research extends the traditional metallogenic prediction method to 3D space, which can provide reference for prospecting work in the deep and peripheral areas. |
| SHI Rui,ZHANG Ying-hui,LU Min-jie,KUANG Hai-yang,ZHANG Guo-li.2018.3D Metallogenic Prediction Based on Geological and Gravity-magnetic Data Integration in the Qian’an Iron Ore Concentration Area, Hebei Province[J].Acta Geoscientica Sinica,39(6):762-770. |
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