再论大陆构造与动力学

ON CONTINENTAL TECTONICS AND ITS DYNAMICS

采用大陆构造时空动态相关分析法，对大陆构造进行系统的分层、分块、分阶段区域构造解析，认为包括隆块、陷块和旋块等基本类型的断块构造和具有不同的物质成分、变形强度、流变状态的层状构造是大陆构造的基本型式。在构造活动期间，层流隆陷构造系统发生大规模的物质迁移，构成动态的循环体系，大陆地壳下部层圈以热动力作用为主，造成粘塑性热流物质和韧性固流物质沿着壳内流层从幔隆区流向幔拗区；上部层圈以应力作用为主，与下地壳层流相关的伸展、挤压和剪切等多重构造体制控制了断块构造的形成和演化。

On the basis of tectonic analysis on stratification, block and stage of continental tectonics,this paper employs dynamic analysis method of tectonic time-space correlation to deal with that the fault block tectonics including some basic types such as uplift block, subsidence block and rotation block and layered tectonics showing different composition, strength and rheology are basic pattern of continental tectonics. During tectoinc activity, large amount of substance migration occurs in laminar flow and uplift-depression tectonics, and forms dynamic cycle system. Heat dominates the lower level of continental crust and result in the flow of viscoplastic and ductile substance along the ductile flow layer from mantle burgle area to mantle depression area, stress dominates the upper level of continental crust,and extension, and compression and shearing tectonic regimes related to the laminar flow of lower crust control the formation and evolution of fault block tectonics.