地幔地球化学研究进展:微量元素和同位素特征

doi:10.11867/j.issn.1001-8166.1999.02.0159

地球科学进展 ›› 1999, Vol. 14 ›› Issue (2): 159 -163. doi: 10.11867/j.issn.1001-8166.1999.02.0159

匡少平,徐仲

中国地质大学地球化学研究所, 湖北武汉 430074

收稿日期:1998-04-22 修回日期:1998-06-18 出版日期:1999-04-01
通讯作者: 匡少平,男,1966年10月出生,副教授,主要从事岩石圈地幔地球化学研究。
基金资助:
国家自然科学基金项目“超高压变质作用与碰撞造山动力学(项目编号:49794043)和国土资源部壳幔开放重点实验室联合资助。

PROGRESS IN MANTLE GEOCHEMISTRY:ISOTOPES AND MINOR ELEMENTS

KUANG Shaoping,XU Zhong

Institute ofGeochemistry,China University ofGeosciences,Wuhan 430074,China

Received:1998-04-22 Revised:1998-06-18 Online:1999-04-01 Published:1999-04-01

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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。

关键词: 地幔演化, 地幔成分, 同位素, 微量元素, 地球化学

The paper firstly introduces the developmentofmantle 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 showthat 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.Atthe same time,it is pointed outthatthe backward of analytical technique and the nonbreakthrough of fundamental theories affect seriously the application and development of isotopes and minor elements to mantle researches.

Key words: Mantle evolution, Mantle compositions, Isotopes, Minor elements, Geochemistry.

中图分类号:

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