现代地质2024，Vol.38Issue(4)：910-921,12.DOI:10.19657/j.geoscience.1000-8527.2024.089
胶东金矿成岩成矿深度测算方法探讨
Discussion on the Method for Calculating Diagenetic and Metallogenic Depths in the Jiaodong Gold Deposit
摘要
Abstract
The reserves and production of the Jiaodong gold deposit account for one-quarter and one-third of China's totals,respectively.The gold mineralization theory in the Jiaodong area is continuously evolving through ongoing research,discussion,development,and innovation,driven by advances in geological science and tech-nology.The Xincheng gold deposit in Northwestern Jiaodong is a representative example of altered-rock type gold deposits and is also one of the key production mines.With the state's increasing attention to mineral resource safety,there is an urgent need for deep exploration and resource storage in the Jiaodong area.In the mineral exploration,particularly for deep prospecting,the estimation of diagenetic depth,metallogenic depth,and denudation depth is an important prospecting method and geological theory.Therefore,this study selects the Xincheng gold mine as a case study to discuss the methods and applications for measuring or calculating the depths of diagenesis,mineralization,and denudation.Using the Xincheng gold deposit as an example,the average diagenetic depth of the Guojialing granodiorite,the ore-host rock mass,is estimated to be 3 km based on calculated mineral formation pressure.The average depth of erosion and transformation of the Xincheng gold deposit is estimated to be 2 km using the correction method for metallogenic depth.Fission track analysis indi-cates that the post-mineralization denudation depth of the Xincheng gold deposit is approximately 2.5 km.Based on the above calculation results,we discuss the metallogenic patterns and predictions for gold deposit depths in the Jiaodong area.The production and exploration work in the study area has confirmed that the metal-logenic depths calculated in this study are consistent with the principles of mineralization formed in depth,pro-viding important reference value for deep ore prospecting in the Jiaodong gold deposit and other types of hydrothermal metal deposits.关键词
成矿深度/成岩深度/剥蚀深度/构造校正测算/胶东金矿Key words
metallogenic depth/diagenetic depth/denudation depth/structural correction calculation/Jiao-dong gold deposit分类
天文与地球科学引用本文复制引用
吕承训,王建平,陈小龙..胶东金矿成岩成矿深度测算方法探讨[J].现代地质,2024,38(4):910-921,12.基金项目
国家自然科学基金项目(40972061) （40972061）
山东省国土资源厅项目(鲁地调合[2012]33号). （鲁地调合[2012]33号）
