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熔体（或岩浆）及其活动在造山带的演化中发挥了重要作用。熔体活动改变了地壳应力作用方式而诱发形成剪切带或断层；熔体活动调整块体间的位移而影响造山带的变形；熔体活动影响变形机制而诱发造山带的迅速脉动隆升或伸展滑塌。另外，熔体的上侵也可使造山带的山根部分被消耗掉。因此，造山带中的熔体及其活动会强烈改变地壳岩石的流变学特性，使其强度弱化，从而加剧了造山带的变形
Melt (or magma) and its activities played an important role in the evolution of the orogenic belt. Melt activity changes the mode of crustal stress and induces the formation of shear band or fault. The melt activity adjusts the displacement between blocks to affect the deformation of the orogenic belt. The melt activity affects the deformation mechanism and induces the rapid fluctuation of the orogenic belt. Stretch slip. In addition, the melting of the invagination can also make the mountain root part of the orogenic belt is consumed. Therefore, the melt and its activities in the orogenic belt strongly alter the rheological properties of crustal rocks, weakening their strength and aggravating the deformation of the orogenic belt