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.
岩形成于
有
性火
作用
活动大陆边缘滨海-浅海环境。经过太古宙
区域高角闪岩相变质作用,形成孔兹岩系。