摘要
上宫金矿属于典型的构造蚀变岩型金矿床,该区经历了多期次构造运动,断裂十分发育,主要有NE、近SN及EW向3组。本区深源成矿流体沿熊耳山幔枝构造轴部断裂上涌运移至幔枝构造拆离带南部的金硐沟断裂中,氧化—还原环境促使成矿元素在构造扩容带中沉淀、聚集成矿。以幔枝构造理论为指导,通过分析构造控矿特征,指出本区地幔热柱多级演化沟通了深部通道,为上宫金矿的形成提供了充足的物源,同时,深大断裂与拆离带的交会部位有利于矿液的聚集,是该区重点找矿部位。
It is a typical structural alteration type gold deposit for Shanggong gold deposit.The area has experienced a number of tectonic movement, the fault is very developed which concluded three groups and mainly about NE,SN and nearly EW.Along the Xiong＇ershan mantle branch shaft portion fracture, deep ore-forming fluids upwelling and moves to the Jindonggou fault which located at the south of mantle branch detachment zone. And then the oxidation-reduction environment caused the ore-forming elements precipitated,collected and mineralized in tectonic expansion zone.Using the Mantle Branch Theory as a guide,and by analyzing the structural controlled features, pointed out that Multi-stage evolution of mantle plume connect the deep channel, and provides adequate provenance for the formation of Shanggong gold deposit in the area.At the same time,it is a good place for gathering ore fluid in intersection of the deep fault and the detachment zone ,which is the key position for prospecting.
出处
《黄金科学技术》
CSCD
2013年第6期30-35,共6页
Gold Science and Technology
基金
河南省国土资源厅地质科研项目"熊耳山北麓中深部金矿成矿规律与找矿方向研究"(编号:20116227)资助
关键词
幔枝构造
成矿作用
构造控矿
上宫金矿
豫西地区
mantle branch structure
mineralization
ore -controlling structure
Shanggong gold deposit
westernHenan Province
