地幔对流与深部物质运移研究的新进展  

Advancements in the study of mantle convection and the material movements in the deep Earth interior

作　　者：傅容珊[1] 冷伟[1] 常筱华[1] 

机构地区：[1]中国科学技术大学地球和空间科学学院,合肥230026

出　　处：《地球物理学进展》2005年第1期170-179,共10页Progress in Geophysics

基　　金：国家自然科学基金(40274033);中科院创新项目(KZCX3SW131)联合资助.

摘　　要：现代固体地球科学已经认识到,地幔对流不再是少数动力学家的假想,它是地幔热动力系统的主要构架.地幔对流和板块运动驱动机理关系的研究已经从简单的主动或被动驱动的讨论转向对统一热动力系统的探讨.包括地幔热柱在内的地幔对流的深入研究不仅成为研究地幔热动力系统演化的主线,也成为研究大陆形成和演化驱动机理的主线.与此同时,以地震层析成像为主体的地震、地球物理观测资料和以地幔岩石化学组份为主体的地球化学观测成为认识地幔对流的强有力的工具.然而,地球化学和地球物理观测之间存在明显的差异,一些依赖于地球化学数据构思的新的热动力学框架对地幔对流的研究构成了强烈的挑战.Now geo-science realized that the mantle convection is not the imagination of few geodynamical studies. It is the main frame of the mantle thermodynamic system. The study of the mantle convection and plate tectonics has been transformed from the simple discussions of the driving mechanics either passive or active into the discussions of en united mantle thermodynamic system. The mantle convection system (including plumes) not only the main subjects in the study of the mantle evolution, but also in the study of the continent formation and evolution. At the same time, the geophysical (in particular seismic tomography) and geo-chemical observations turn into the main way to investigate the mantle convection system. However, these two groups of data set are inconsistent in the inferring the structure of mantle convection. Some new mantle thermodynamic models based on the geo- chemical data became the strong challenge to the study of the mantle convection.

关 键 词：地幔对流 热动力学 地球物理 地球化学 

分 类 号：P541[天文地球—构造地质学] P313[天文地球—地质学]