火山型被动陆缘演化与拉张期岩浆活动的壳底垫托作用

EVOLUTION OF THE VOLCANIC TYPE PASSIVE CONTINENTAL MARGIN AND THE UNDERPLATING OF MAGMATIC ACTIVITY DURING EXTENSION

本文讨论了被动陆缘演化研究中的最新进展和大陆岩石圈拉伸的纯剪切模式、简单剪切模式及“对”被动陆缘新概念，详细论述了火山型被动陆缘形成、演化的深部构造背景及拉张期岩浆活动的壳底垫托作用，强调在陆间型褶皱带研究中拉张型过渡壳的划分和研究具有重要意义。

This paper expounds tile latest advance of research on continental margin evolution and discusses the model of pure shearing and simple shearing on continental lithosphere extension and new conceptions of paired passive continental margin. The deep tectonic setting of formation and evolution on the volcanic passive continental margin and the underplating of magmatic activity during extension are discussed. The significance of extended transitional crust on the research of intercontinental foldbelt evolution is emphasized.