地幔交代作用：研究进展、问题及对策

有关地幔交代作用的研究始于７０年代早期。近２０年来研究工作的贡献是使人们对与地幔演化和不均一性有关的地幔交代作用特征和交代作用机制有了更多的了解。地幔交代作用很复杂，它取决于交代作用发生的时间、构造环境、交代介质的种类以及与不同深度地幔内各种地质事件有关的流体的组成。进一步深入开展有关交代作用成因、机制及其与各种地质事件关系的研究，对于深入认识岩石圈地幔的演化和不均一特征具有十分重要的意义。对不同构造环境中的不同包体类型进行深入研究，为地幔交代作用提供广泛约束。将传统的地质学、岩石学的研究与地球化学、地球物理学以及现代测试技术相结合，很可能为解决交代作用成因、机制及交代作用与岩浆作用之间的时间先后问题，交代作用与地质事件的关系问题提供有效的方法和途径。

MANTLE METASOMA TISM:PROGRESSES,PROBLEMS AND COUNTERMEASURE

This paper is a review for metasomatic processes in the mantle. The studies pertinentto mantle metasomatism began in the early 1970s. Since that time the contributions of thestudies to our unders tanding of the nature and the mechanism of the mantle metasomatisminvolved in the evolution and heterogeneity of the mantle has been considerable,All of thestudies show that mantle metasomatism may be very complex depending on the time,place,the type of agent and the nature of the fluid with various decoupled and cyclicevents occuring at different depths of the mantle. Hence, future study pertinent to thegeneration,mechanism and conditions of the metasomatic processes in the mantle will un-doubtedlly prove to be as important for understanding depthly the evolution and hetero-geneity of the mantle as those covered in this review,It may be very effective methods andways for solving the generation,mechanism and time relationships between magmatismand metasomatism,to study depthly xenoliths from different place and type for metasoma-tism constraints,to combine traditional geology and petrology with modern test tech-nique,and to combine subjects containing geology,petrology,geochemistry with geo-physics.