| 山东铁矿成矿规律及潜力分析 |
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| 引用本文： | 郝兴中,肖克炎,王巧云,朱学强,李英平,智云宝,张文,张志刚,彭观峰,刘芳,刘彬彬.山东铁矿成矿规律及潜力分析[J].地球学报,2023,44(5):834-848. |
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| 作者姓名： | 郝兴中 肖克炎 王巧云 朱学强 李英平 智云宝 张文 张志刚 彭观峰 刘芳 刘彬彬 |
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| 作者单位： | 山东省地质调查院;中国地质科学院矿产资源研究所, 自然资源部成矿作用与资源评价重点实验室 |
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| 基金项目： | 山东省自然科学基金项目(编号: ZR2020MD033);中国地质调查局“全国重要矿集区找矿预测”项目(编号: DD2016005223);“重要锡;锰等矿集区矿产地质调查”(编号: DD20190166);山东省矿产资源国情调查(编号: 鲁矿保[2020]1号) |
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| 摘 要： | 山东省地处中国东部, 经历了漫长地质演化历史, 分为鲁西和鲁东2个主要地块, 地质矿产具有各自鲜明的特征; 其中区内铁矿成矿地质条件优越, 成因类型多样, 矿床广泛分布, 资源储量丰富, 是全国重要的铁矿开发基地。本次研究旨在通过对全省地质矿产资料进行总结, 从地层赋矿、构造控矿、岩浆岩成矿和物探异常示矿等方面对全省铁矿成矿规律进行分析, 进一步对全省铁矿资源潜力进行研究。研究表明全省铁矿类型共分苍峄式、莱芜市、莲子汪式、朱崖式等共14个矿床式; 铁矿成矿规律研究表明, 各铁矿类型受到地质构造演化控矿、地层控矿、岩体控矿、构造控矿等控制程度不同; 如地层控矿方面尤以沉积变质型、化学沉积型较为突出, 岩体控矿方面尤以岩浆型铁矿最为显著, 而接触交代型铁矿则是地层控矿、岩体控矿、构造控矿联合作用的结果。随着深部找矿工作的持续推进, 认真总结物探异常示矿规律是今后勘查工作的重点, 低缓磁异常区的勘查是取得重大进展的关键。通过对全区铁矿的时空分布特征对比分析和成矿规律研究, 划分了全省铁矿成矿系列, 并总结了综合找矿预测模型; 构建了研究区铁矿综合勘查技术体系。此次研究共圈定了苍峄铁矿远景区、莱芜铁矿远景区、淄河铁矿远景区和莱阳西铁矿远景区等36处; 其中沉积变质型铁矿共15处, 接触交代型铁矿共9处, 岩浆热液型铁矿共4处, 岩浆型铁矿共8处; 在上述36处远景区中, A类远景区共18处, B类远景区共13处, C类远景区共5处, 在今后各个铁矿类型勘查过程中, 沉积变质型铁矿和接触交代型铁矿是今后勘查工作的重点。本次研究为今后全省铁矿找矿工作提供了部署依据和勘查方向。
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| 关 键 词： | 山东省 铁矿 控矿要素 成矿规律 成矿系列 找矿远景区 |
Metallogenic Regularity and Potential Analysis of Iron Ore in Shandong Province |
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| HAO Xing-zhong,XIAO Ke-yan,WANG Qiao-yun,ZHU Xue-qiang,LI Ying-ping,ZHI Yun-bao,ZHANG Wen,ZHANG Zhi-gang,PENG Guan-feng,LIU Fang,LIU Bin-bin.Metallogenic Regularity and Potential Analysis of Iron Ore in Shandong Province[J].Acta Geoscientia Sinica,2023,44(5):834-848. |
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| Authors: | HAO Xing-zhong XIAO Ke-yan WANG Qiao-yun ZHU Xue-qiang LI Ying-ping ZHI Yun-bao ZHANG Wen ZHANG Zhi-gang PENG Guan-feng LIU Fang LIU Bin-bin |
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| Institution: | Shandong Institute of Geological Survey;MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources,Chinese Academy of Geological Sciences |
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| Abstract: | Shandong Province is located in the east of China and has experienced a long history of geological evolution. It is divided into two main blocks of western Shandong and eastern Shandong. The geology and mineral resources have their own distinct characteristics. Among these, the iron ore-forming geological conditions in the area are superior, the genetic types are diverse, the deposits are widely distributed, and the resources reserves are abundant. It is an important iron ore development base in China. The purpose of this study is to summarize the geological and mineral data of the province, analyze the iron metallogenic regularity of the province from the aspects of stratigraphic ore-hosting, structural ore-controlling, magmatic ore-forming and geophysical anomaly prospecting, and further study the iron ore resource potential of the province. This study found that the iron ore types in the province are divided into 14 ore deposit types, including Cangyi type, Laiwu type, Lianziwang type, and Zhuya type, etc. The study on the metallogenic regularity of iron ore showed that each type of iron ore is controlled by geological structure evolution, strata, magmatic rock and structure; For example, in terms of strata ore-controlling, sedimentary metamorphic type and chemical sedimentary type are more prominent; in terms of magmatic rock ore-controlling, magmatic type iron ore is the most prominent; while contact metasomatic type iron ore is the result of the combined ore-controlling of strata, magmatic rock and structure. With the continuous advancement of deep prospecting, the focus of future exploration work is to summarize geophysical anomalies prospecting carefully, and the exploration of low slow magnetic anomaly areas is the key to making great progress. Based on the comparative analysis of the temporal and spatial distribution characteristics of iron ore in the whole region and the study of metallogenic regularity, the metallogenic series of iron ore in the whole province are divided, and the comprehensive prospecting prediction model was summarized. The study established a comprehensive iron ore exploration technology system in the study area. The study has delineated 36 iron ore prospecting areas, including Cangyi iron ore prospecting area, Laiwu iron ore prospecting area, Zihe iron ore prospecting area and Laiyang West iron ore prospecting area; Among them, there are 15 sedimentary metamorphic type iron ores, 9 contact metasomatic type iron ores, 4 magmatic hydrothermal type iron ores and 8 magmatic type iron ores. There are 18 class A prospecting areas, 13 class B prospecting areas and 5 class C prospecting areas in the 36 iron ore prospecting area above. In the future exploration of various iron ore types, sedimentary metamorphic iron ore and contact metasomatic iron ore are the focus of future exploration. This study provides the deployment basis and exploration direction for the future iron ore prospecting work in the province. |
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| Keywords: | Shandong Province iron ore ore-controlling elements metallogenic regularity minerogenetic series prospecting prospect |
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