胶北地区内生金矿成矿规律

Ore-forming Rule of Endogenetic Gold Deposit in North of Jiaodong Area

摘要:

胶北内生金矿是壳幔混源岩浆期后热液成矿 ,受复合基底EW向构造的早新华夏系和郭家岭超单元控制 ,蚀变、矿化分阶段连续进行 ,分为焦家式、灵山式、玲珑式及上庄式四个亚类型。金矿床区域上东西成行、南北成列、汇集成片呈棋盘格局 ;矿带内矿床沿走向等距分布、沿横向对应出现 ,矿床类型横向具分带、走向有变化、倾向相对稳定。矿体在控矿构造引张扩容段和构造叠加段赋存 ,并具斜立、侧伏、尖灭再现、斜列、瓦叠等产出规律。

Abstract:

Gold deposit in north of Jiaodong area is formed by hydrothermal crust and mantle after the magma period. They are controlled by early Neocathaysian and Guojialing superunit on composite basements with the trend of EW, and alteration and mineralization occurred continuously and stepply. Gold deposits are classified into four subtypes as Jiaojia type, Lingshan type, Linglong type and Shangzhuang type. Gold deposit areas are distributed as belts as looking at from east to west and as strings from north to south which spread all over the areas; and within a belt the gold deposits are equally spaced from north to south and have their conterparts in the paralell belts from east to west. In the belts, the types of gold deposits change along the strike, showing clear zonation in traverse, but remain stable along dipextension.