豫西熊耳山地区燕山期岩浆作用对金银成矿的制约因素

Magmatic activities and its constraints on gold-silver mineralization in Xiong'ershan area,western Henan province

论述了豫西熊耳山地区燕山期岩浆作用对内生金属成矿的制约因素,认为该期岩浆提供了部分成矿物质,花岗岩侵位提供了热能,驱动地幔流体与地壳流体混合、对流循环,并从周围前寒武纪地层中萃取成矿物质,在适宜构造带卸载成矿。

The paper expatriates constrains of the magmatic activities of Yanshanian Period in Xiong＇ershan area of west Henan province on endogenic metallogeny. It is believed that part of the ore matter was provided by magma and the emplaced granite intrusions acted as ＂ engines＂ which drive the mixed hydrothermal solution of the meteoric and mantle fluids to form a conductive circulation system. The hydrothermal solution leached the ore substance from the Precambrian strata and discharged the gold in some suitable fractures, such as sheer zone to form the gold deposit.