【摘要】 大陆下地壳是地球深部地壳生长和变形、壳—幔物质与能量交换及壳内物质分异的重要场所。对大陆下地壳结构、成分与性质的认识,是更好地探索地壳形成、演化等地球动力学过程的前提。总结前人根据地震反射、区域麻粒岩和麻粒岩包体等的研究,对大陆下地壳物质组成进行归纳;总结大陆下地壳岩石的流变性质,在此基础上对大陆下地壳流动的几种模式进行对比。更多还原

【Abstract】 Lower continental crust is an important place where the deep-seated earth’s crust growth and deformation,the crust-mantle matter and energy exchanging and shell material differentiation occur. A deeper probe into the structure,component and properties of the crust provides premise for the better exploration of crust formation,evolution and geodynamic processes. Based on the former researches on seismic reflection,regional granulite and granulite xenoliths,this paper concludes crustal components and rheological property of crustal rocks,thus providing a summary of and comparison among several models of crustal flow.更多还原