投稿时间：2025-08-31
修订日期：2025-11-03
网络发布日期：2026-01-04
中文摘要:冀东是中国重要的金矿床集中区，由于在金矿成矿时代、矿床类型等方面的认识尚存争议，制约了区内找矿突破。文章在系统总结冀东地区典型金矿床特征和成矿模式的基础上，综合分析了成矿时代、流体包裹体、稳定同位素等的测试结果，并对比了胶东金矿床的相关数据，探讨了中生代构造岩浆活动背景、金成矿系统演化和找矿前景。结果认为，冀东地区金矿床主要形成于185.1~168.65 Ma的早侏罗世晚期至中侏罗世早期，成矿流体初始来源于岩浆水，有地幔流体和大气降水参与，矿石硫和铅来源于下地壳的岩浆源区。冀东地区不同类型金矿床均为岩浆热液型金矿。在与古太平洋板块俯冲有关的，由挤压向伸展构造体制转换的背景下，由加厚下地壳的壳源埃达克型侵入岩向软流圈上涌背景的壳-幔混合源岛弧型侵入岩转变是影响金成矿的重要因素。晚中生代，随着古太平洋板块初始俯冲之后的回撤，冀东地区壳-幔相互作用及其引发的强烈岩浆热隆起与断陷盆地、拆离断层等伸展构造，共同控制了金矿床形成和保存的全部地质要素和成矿作用过程，构成了热隆-伸展成矿系统。与胶东金成矿系统对比表明，冀东地区具有较好的金矿找矿潜力。文章研究结果为揭示区域成矿规律，深化对冀东地区金成矿作用的科学理解，以及发现新的金矿资源提供了理论依据。
Abstract:Eastern Hebei Province is a major gold deposits concentration zone in China, but ongoing debates about its metallogenic epoch and deposit types have impeded exploration progress. This study systematically reviews the characteristics and metallogenic models of typical gold deposits in eastern Hebei. By analyzing metallogenic age, fluid inclusions, stable isotopes, and comparing data from the Jiaodong gold deposits, we investigate the Mesozoic tectonic-magmatic background, the evolution of the gold metallogenic system, and its prospecting potential. Results show that gold deposits in eastern Hebei mainly occurred during the Late Early Jurassic to Early Middle Jurassic (185.1~168.65 Ma). The ore-forming fluids were initially magmatic in origin, with contributions from mantle-derived fluids and meteoric water. Sulfur and lead in the ores were sourced from lower crustal magmas, and all deposits are classified as magmatic-hydrothermal type. The transition from compressional to extensional tectonic stress regimes, which linked to subduction of the Paleo-Pacific Plate, and the shift from thickened lower crust-derived adakitic intrusions to asthenosphere upwelling-related crust-mantle mixed arc-type intrusions were critical for mineralization. During the Late Mesozoic, the retreated of the Paleo-Pacific Plate after initial subduction facilitated crust-mantle interaction in eastern Hebei. Intense magmatic thermal uplift, faulted basins, detachment faults, and other extensional structures collectively governed deposits formation and the entire metallogenic process, forming a “thermal doming-extension metallogenic system”. Comparison with the Jiaodong gold system suggest substantial untapped exploration potential in eastern Hebei. These findings provide a theoretical framework for deciphering the regional metallogenic patterns, advancing the understanding of gold mineralization in eastern Hebei, and guiding future gold discoveries.
keywords:metallogenic system prospecting potential thermal doming-extension gold deposits eastern Hebei Province
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基金项目:本文得到河北省自然科学基金面上项目（编号：D2025403029）、深地国家科技重大专项（编号：2025ZD1006400）和河北省全职引进国家高层次创新型人才科研项目（编号：2023HBQZYCXY010）联合资助
引用文本：
宋明春,李杰,吕水,肖庆玲,刘育,李振,唐宗源,王一存.2025.冀东地区金矿床成矿系统及找矿潜力[J].矿床地质,44(6):1149~1180SONG MingChun,LI Jie,Lü Shui,XIAO QingLing,LIU Yu,LI Zhen,TANG ZongYuan,WANG YiCun.2025.Metallogenic system and prospecting potential of gold deposits in eastern Hebei Province[J].Mineral Deposits44(6):1149~1180
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