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.
原成于具有基性火山
的活动大陆边缘滨海-浅海环境。经过太古宙的区域高
相
质
,
成孔兹
系。