Trace element characteristics in the diopsides of peridotite xenoliths: a laser ablation inductively coupled plasma-mass spectrometry study

被引：3

作者：

Chen, SH ^{[1
]}

Zhou, XH

O'Reilly, SY

Griffin, WL

Zhang, GH

Zhang, M

机构：

[1] Chinese Acad Sci, Inst Geol, Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China

[2] Macquarie Univ, Sch Earth Sci, GEMOC, Sydney, NSW 2109, Australia

来源：

CHINESE SCIENCE BULLETIN | 1998年 / 43卷 / 07期

基金：

中国国家自然科学基金;

关键词：

LA-ICP-MS; diopside; trace elements;

D O I：

10.1007/BF02883644

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Among the various xenoliths entrained by the Cenozoic Hannuoba basalts, peridotite is the most abundant one. The trace elements of the diopsides from the peridotite xenoliths were analysed by LA-ICP-MS. The overall depletion and some heterogeneity of the continental mantle beneath northern North China Craton were indicated by the characteristics of the trace elements. The Sigma REE amount in diopside correlates with the Cr/(Cr + Al) ratio of diopside which is indicative of xenolith's partial melting degree. As the peridotite hosts and pyroxenite veins show similar REE distribution patterns, the composite xenoliths are probably formed by mantle deformation, rather than by the late metasomatism of mantle fluids/melts.

引用

页码：579 / 583

页数：5

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