Re-Os同位素体系在地球科学中的应用

APPLICATION OF THE Re-Os ISOTOPE SYSTEM IN GEOSCIENCE

在汇总本世纪六十年代以来国际上Re Os同位素地质学主要文献的基础上 ,概括总结了Re Os同位素地质学几十年来的研究成果。系统地介绍了Re Os同位素体系在地质年代学和示踪研究方面的应用。阐明了Re Os地质年代学的定年原理、实验技术、优势 ,以及应注意的问题 ;归纳总结了Re Os在陨石、大陆壳和地幔等不同储库中的丰度、分布及演化特征 ;回顾了近年来Re Os同位素体系在陆壳演化、洋岛玄武岩和地幔羽成因及陨石撞击等示踪研究方面的工作和进展。

The applications of the Re\|Os isotope system to geochronology and geological tracing are introduced, based on a summary of the main papers published since the 1960's on geoscience. The principle of Re\|Os dating, experimental techniques and problems in geochronology are clearly interpreted. The abundance and distribution and the evolution characteristics of the Re\|Os system in different reservoirs including continental crust, meteorites and mantle are discussed in detail. Recent developments in research on the Re\|Os isotope system, as a tracer of the mantle geochemistry and crust\|mantle evolution and the extraterrestrial impact events, are also introduced in the present paper.\;