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山活动大陆边缘海-浅海环境。经宙区域高角闪岩相变质,形成孔兹岩系。
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