The rise of plutonic granitic magma was the basic heat source generating strong dynamometamorphism and one of the main factors that influenced dynamic deformation.
The granitic magma is rising and diffusing with buoyancy and then in the form of diapire in upper crust which resulted in the extending orogeny.
During the course of its thickening and the hydrothermal fluid enriching, the crust under the root of mountain is melting into some large granitic magma.
