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
活动大陆边缘滨海-浅海环境。经过太古宙
区域高角闪
相变
,形成孔兹
系。