岩石圈塑性流动与大陆板内构造变形研究进展评述

Review on the Progress in Studies on Plastic Flow of Lithosphere and Continental Intraplate Tectonic Deformation

人们对大陆板内构造变形机制有两种不同认识，即“刚性”板块通过弹性实现应力远程传递和岩石圈通过下层塑性流动实现应力远程传递。通过对岩石圈各层变形属性和塑性流动的研究，认为通过处于塑性状态的下地壳和岩石圈地幔的塑性流动实现应力远程传递和控制板内构造变形更为合理。

There are two different opinions about the mechanics of continental intraplate tectonic deformation:the far range stress transmission of “rigid”plate is carried out by elasticity;and the far range stress transmission of lithosphere is carried out by plastic flow in the ductile layer According to the studies on the deformation attribute and plastic flow of various layers of lithosphere,the author suggests that it is more reasonable that far range stress transmission is driven by the plastic flow of the lower crust and lithospheric mantle which is in a plastic state,and thus control the intraplate tectonic deformation