The Middle Proterozoic granitoids was an intraplate type producted in transitinal crystalline basement before plate collision.
The Middle Proterozoic granitoids was an intraplate type producted in transitinal crystalline basement before plate collision.
中元古界的花岗岩类是板块碰撞前过渡性结晶基底上局部熔融花岗岩类。