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.

原岩形成于具有基性火的活动大陆边缘海-浅海环境。经过的区域高角闪岩相变质，形成孔兹岩系。