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.
原岩形成于具有基作用
活动大陆边缘
海-浅海环境。经过太古
域高角闪岩相变质作用,形成孔兹岩系。