The protoliths of blueschists and eclogites can be divided into N-MORB, E-MORB, OIB, gabbro, basic volcaniclastic rock, greywacke etc.

• 蓝片岩和榴辉石的原岩有N-MORB、E-MORB、OIB、辉长岩、基性火山碎屑岩、硬砂岩等类型。