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.


成于具有基性火山作用的活动大陆边缘滨海-浅海环境。经过太古宙的区域高角闪
相变质作用,
成孔兹
系。
浆;
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