【摘要】 近年来，山东省齐河—禹城地区矽卡岩型铁矿找矿工作取得了重大进展，相继发现了李屯、大张、郭店和叠道铁矿床。本文通过对区域成矿地质背景和铁矿区地质-地球物理特征进行总结分析，并深入剖析该区铁矿床特征，重点研究铁矿体赋存和控矿要素特征，进而构建该区矽卡岩型铁矿成矿模式。研究区矽卡岩型铁矿具有多期次成矿、多要素控矿、多空间赋矿的特点，是众多地质要素耦合的产物，其中早白垩世中基性侵入岩是该区铁矿成矿地质体，奥陶纪碳酸盐岩地层以及石炭纪—二叠纪碎屑岩地层对铁矿成矿和赋矿均有十分重要的控制作用。本研究构建了前寒武纪、古生代、中生代和新生代时期多角度、多层次、多时段和多维度的地质演化过程和铁矿成矿模式，研究显示在早白垩世区域上地幔岩浆活动强烈，并在其侵入过程中，发生岩浆演化；岩浆与奥陶纪碳酸盐岩地层发生了接触交代作用，形成大量富矿热液；在构造系统中不同地段形成了规模不同、赋存多样、形态各异的铁矿体。更多还原

【Abstract】 In recent years, significant progress has been made in the exploration of skarn-type iron deposits in the Qihe-Yucheng area of Shandong Province. Iron ore deposits have been successively discovered, such as Litun, Dazhang, Guodian, and Diedao in the area. This paper summarizes the geological background of mineralization in the study area, analyzes the geological and geophysical characteristics of iron ore deposits in-depth, and categorizes the controlling factors of iron ore bodies in the area. The study then explores and proposes the skarn type of iron ore mineralization model in the area. The skarn-type of iron ore in the research area has the characteristics of multi-stage mineralization, multi-factor ore controlling, and multi-spatial ore hosting, which indicates it is a product of the coupling of numerous geological factors. The intermediate-basic intrusive rocks of the Early Cretaceous period are the minerogenetic geological bodies of iron ore in the area. The Ordovician carbonate rock strata and Carboniferous-Permian clastic rock strata play very important roles in controlling the iron ore metallogenic and ore-hosting processes in this area. This study constructed a multi-perspective, multi-level, multitemporal, and multi-dimensional geological evolution process and iron ore mineralization models from the Precambrian, Paleozoic, Mesozoic, and Cenozoic periods. During the Early Cretaceous period, there was intense magmatic activity in the upper mantle of the region, and magma evolution occurred during its invasion process. It is concluded that magma and Ordovician carbonate rock strata underwent contact metasomatism, formed a large amount of rich mineral hydrothermal fluids, leading to iron ore bodies with varying scales, diverse modes of occurrence, and varied shapes of the construction system.更多还原