| 华北铁矿成矿系列与找矿方向 |
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| 关键词:North China block iron deposit mineralization series of deposits metallogenic regularity direction of prospecting |
| 基金项目:中国地质调查局“中国矿产地质志”项目(编号: DD20221695; DD20190379; DD20160346) |
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| Metallogenic Series and Prospecting Direction of Iron Deposits in the North China Block |
| The North China block is one of the most important iron ore distribution areas in China. The high dependency on iron ore imports necessitates deeper research into iron ore mineralization laws, prospecting, and exploration. Guided by the theory of metallogenic series of ore deposits, taking geological age as the boundary, and incorporating the latest research on the tectonic evolution of the North China block, this study has identified six metallogenic series of iron ore deposits: ① Metallogenic series (groups) of Fe deposits related to Archean marine volcanic sedimentary metamorphism in the North China block; ② Metallogenic series (groups) of Fe deposits related to Paleoproterozoic magmas, volcanoes and sedimentary metamorphism in the east of the North China block; ③ Metallogenic series (groups) of Fe, Ti, and V deposits in the north of the North China block related to the magmatic sedimentation of Mesoproterozoic tectonic cycles; ④ Metallogenic series (groups) of Fe deposits related to Neoproterozoic magmatism and sedimentation in the east of the North China block; ⑤Metallogenic series (groups) of Fe deposits related to Paleozoic volcanism sedimentation and sedimentation in the North China block; ⑥ Metallogenic series of Fe deposits related to Yanshanian magmatism in the central and eastern part of the North China block. Six metallogenic series constitute a relatively complete iron ore metallogenic pedigree in the North China block. Based on this research, this study proposes that iron ore exploration efforts should focus on five dimensions: geological unit, geological time, geological process, useful components, and deposit type combination. As a highly summarized result after in-depth study of typical deposits, the ore deposit type is also essential to prospecting work. A new understanding of the structures of key mines such as Bayan Obo, Chentaigou, Sijiaying and Xingshan will help achieve further breakthroughs in ore prospecting. |
| GAO Xin-yu,WANG Deng-hong,CHEN Yu-chuan,HUANG Fan,WANG Cheng-hui,DI Yong-jun.2023.Metallogenic Series and Prospecting Direction of Iron Deposits in the North China Block[J].Acta Geoscientica Sinica,44(4):673-688. |
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