内蒙古大青山地区普遍发育由孔兹岩系、黑云角闪片麻岩系、麻粒岩系和侵位其中的变质深成岩构成的高级变质杂岩。
Early Precambrian metamorphic complex and also high-grade metamorphic strata are well-developed in Daqingshan area in the northern margin of North China craton .
角闪片麻岩