碰撞造山过程中热-构造状态演化与陆壳岩石熔融的关系

碰撞造山作用过程中陆壳岩石馆融形成花岗岩浆主要出现在加热期和伸展抬升期，是碰任后岩石田热状态调整引起陆壳物质化学分界的结果。陆壳碰撞前的构造历史、大陆岩石国的热参数和地幔过程、造山带的几何学特征和运动学性质等制约了造山带花岗岩类的发育，尤其是与各种造成地慢高热流叠加于下部地壳的岩石圈调整过程关系密切。大别造山带中生代花岗岩类的形成可能就是华北、扬子陆块碰撞后，底侵和垂向分离过程作用于造山带伸展抬升期，引起下部地壳岩石相继发生两次馆融的结果。

RELATIONSHIP BETWEEN THERMO-TECTONIC EVOLUTION AND MELTING OF CONTINENTAL ROCKS IN COLLISIONAL PROCESS

The granitic magma was formed from melting of continental rocks in the collisional process, which occurred mainly during heating and uplift periods of the process and is the result of chemical differentiation of continental materials caused by thermo-state adjustment of continental lithosphere in post-collision. The formation of granitoids in the collisional orogen was controlled by pre-collisional tectonic history of the crust, thermal parameters and mantle activity of continental lithosphere, geometric and motional characters, and specially, it was closely related with these activities of the lithospherewhich supplied the lower crust with high heat flow. Mesozoic granitoids of the Dabie orogen were formed by two-time melting of the lower crust, because both underplating and delamination superposed the uplift period of the orogen after the collision of the North China and Yangtze cratons.