玲珑金矿田不同级别构造控矿特征

在我国著名的胶东玲珑金矿田中 ,发育有众多的断裂构造 ,这些断裂构造具有明显的主次之分 ,并对金矿化起着不同的控制作用。其中 ,破头青断裂为一级控矿构造 ,它控制了整个金矿田矿脉的空间分布、矿化类型、矿物组合以及矿化深度的规律性变化。玲珑断裂为二级控矿构造 ,它控制了次级矿脉的富矿段 ,导致矿脉的斜列及走向变化 ,其产状对两侧次级矿脉的赋矿标高产生一定的制约。矿田内其他NE—NEE方向的众多断裂为三级控矿构造 ,它控制了矿体的产出位置、形态、产状等。

STUDIES ON DIFFERENT TYPES OF FRACTURE STRUCTURES CONTROLLING GOLD OREBODIES IN LINGLONG GOLD OREFIELD

Many kinds of fractures occurred in the Linglong gold orefield, and they played different controlling roles in gold mineralization. Of these fractures, the Potouqing fault was the first-grade fracture controlling orebodies, and it controlled the distribution of gold ore veins, mineralization types, mineral assemblages and mineralization depth; the Linglong fracture was the second-grade fracture, and it controlled the enrichment section of orebodies, and resulted in diagonal ore veins and trend variance, and it controlled the levels at which the second ore veins occur. Other fractures extending NE-NEE were the third-grade fractures, controlling the attitudes, forms and position of orebodies.