中文摘要：

综述了中国东部地壳结构与组成的基本特征,介绍了华北克拉通岩石圈减薄作用这一近年来备受国内外地球动力学界关注的重大科学问题,归纳和总结了目前关于华北克拉通减薄机制的各种模型,并结合大陆岩石圈流变学结构模型,强调从流变学角度探讨华北克拉通下地壳的流变性质对研究和解决华北克拉通破坏机制的意义,提出进行更精细的、结合定量结构水研究的高温高压流变学实验模拟研究可能是解决华北克拉通破坏机制问题的关键手段之一。

英文摘要：

This paper gives an overview of the basic features of the structure and composition of the continental crust in East China. It summarizes the destruction of the North China Craton and its mechanisms, the hot topic for geodynamic community in the literature. By comparing different rheological structures of continental lithosphere,the significance of theological properties of continental lower crust is emphasized for understanding the destruction mechanism of the North China Craton. It is suggested that fine rheological experiments at high pressure and temperature and quantitative hydroxyl analyses are important for solving the destruction mechanism puzzle.