基性岩脉与金成矿的关系

On relations of mafic dikes with gold mineralization

基性岩脉是大陆伸展背景下,主要来自陆下软流圈或地幔岩石圈的岩浆侵入岩体。大量研究成果表明基性岩脉发育与金矿脉在空间展布、构造格局和形成时间具有紧密依存关系,虽然对基性岩脉是否为金矿脉提供金源尚无统一定论,但是根据基性岩脉与金矿化紧密的时空关系,基性岩脉可以作为找金矿的良好标志。

Mafic dikes were derived from magma invasion of sub continental asthenosphere and the mantle lithosphere under the back-ground of continental extension. Studies demonstrated that the development of mafic dikes were closely related with the space extension of gold vein, structure style and formation time of gold. It was concluded that the spatial and temporal relationship of mafic dikes and gold mineralization was favorable ore exploration indicators for gold deposit.