上地幔橄榄岩流变性研究新进展及其地球动力学意义

本文系深部地幔流性研究进展综述文章之一，重点介绍了近年来国际地球物理学界在涉及橄榄岩上地幔流变性的下述三方面取得的进展：（１）化学环境因素对橄榄石高温塑性的影响；（２）高温高压下水在橄榄石晶体中的溶解度和赋存状态；（３）橄榄石多晶体的变形机制转变，并对由此得出的地球动力学意义作了讨论。

NEW PROGRESS IN RHEOLOGY OF PERIDOTITE IN THE UPPER MANTLE AND THEIR GEODYNAMIC IMPLICATION

This paper, being one of the reviews of progress in study of rheological behavior of the upper mantle,focuses on the following three aspects of the recent progress in the area of geophysics, involving rheology of peridotite: (1) the effects of chemical environment on plasticity of peridotite at high temperature; (2) the solubility and existing state of water in crystals of peridotite at high temperature and pressure; (3) the transition in deformation mechanisms of olivine aggregate. Furthermore,the geodynamic implications of them are discussed.