地幔地球化学研究进展:微量元素和同位素特征  

PROGRESS IN MANTLE GEOCHEMISTRY: ISOTOPES AND MINOR ELEMENTS

作　　者：匡少平[1] 徐仲[1] 

机构地区：[1]中国地质大学地球化学研究所

出　　处：《地球科学进展》1999年第2期159-163,共5页Advances in Earth Science

基　　金：国家自然科学基金;国土资源部壳幔开放重点实验室联合资助

摘　　要：系统介绍了近年来地幔同位素地球化学的研究进展，概述了ＳｒＮｄＨｆＰｂ、Ｏｓ、ＨｅＡｒ和Ｎｅ同位素在幔源岩石示踪和成因鉴别上所取得的成果，指出同位素在地幔岩石研究的重要作用；简要总结了全球及区域地幔平均化学成分的主要研究手段和某些全球均一比值（如Ｎｂ／Ｕ、Ｙ／Ｈｏ和Ｃｅ／Ｐｂ）的意义；并提出分析技术的落后和基础理论的停滞是影响同位素和微量元素在地幔研究中应用和发展的主要因素。The paper firstly introduces the development of mantle isotopic geochemistry and summarizes the achievements of applying Sr Nd Hf Pb,Os,He Ar and He isotopes to tracing rock sources and distinguishing their geneses.Recent major studies show that the isotopic information is very important and effective to investigate mantle derived rocks.Then,some main methods determining mantle compositions and the significance of globally uniform ratios such as Nb/U,Y/Ho and Ce/Pb are presented.At the same time,it is pointed out that the backward of analytical technique and the nonbreakthrough of fundamental theories affect seriously the application and development of isotopes and minor elements to mantle researches.

关 键 词：地幔演化 地幔成分 同位素 微量元素 地球化学 

分 类 号：P595[天文地球—地球化学] P597[天文地球—地质学]