火山作用

The formation of auriferous stratawas controlled by volcanism and eustacy.

火山和海平面化对含金地层的形成起到了控制。

Its original rock is sedimented in the environment of active epicontinent-seaboard with basic volcanism, and become khondalite series through the Archean regional high-amphibolite facies metamorphism.

形成于具有基性火山的活动大陆边缘海-浅海环境。经过太古宙的区域高角闪相，形成孔兹系。