辽宁庄河地区花岗岩侵位机制及岩浆动力学的初步探讨——以光明山花岗岩复式岩体为例

A PRELIMINARY STUDY ON THE EMPLACEMENT MECHANISM AND MAGMA DYNAMICS OF THE GRANITE IN ZHUANGHE AREA,LIAONING PROVINCE:A Case Study of the Guangmingshan Composite Granite Body

运用岩浆动力学原理探讨庄河地区光明山花岗岩复式岩体岩浆侵位的驱动力、上升通道、通道最小临界宽度和定位过程,指出光明山花岗岩复式岩体是由其岩浆在区域挤压力的作用下,沿由深大断裂所提供的最小临界宽度呈脉状上侵,并在地壳浅部以岩墙扩张的形式定位而成.

Based on the theory of magma dynamics,the driving force,ascending channel and its minimum critical width for the magma emplacement of Guangmingshan composite granite body are discussed.It is suggested that the rock body was formed as a result of the granitic magma invading upwards in dikes with the minimum critical width of ascending channels,which were provided by deep faults,and emplaced in the shallow crust with expanding of the dikes.