Their general characteristics are of obvious progressive metamorphism, with the heat flow from mantle as the essential factor and a collision orogenic belt to be the tectonic setting.
其共同特征是：具明显的递增变质现象，以地幔热流上升为主要因素，构造背景为碰撞造山。
2
Melt lineation is controlled by deformation, metamorphism and partial melting in an extensional tectonic environment.
熔体线理形成于伸展构造环境中，是变形作用、变质作用和部分熔融作用共同作用的结果。
3
The above shows that granulite facies metamorphism occurred in the crust of (increasing) thickness and caused by strong tectonic disturbance and regional high heat flow.